Wednesday

July 27, 2016
Number of results: 130,783

**7th grade math - Scientific Notation basics**

1. The area of Greenland is 840,000 square miles. What is this number in scientific notation? 2. What is this number in standard form? 5.75 x 10^9 3. In a recent year the world production of wheat was about 5.2 x 10^8 metric tons. What is this number in standard notation?
*September 27, 2012 by Delilah*

**7th grade math questions Scientific Notation**

19. Write the size of a grain of very fine sand, about 9.35 x 10^-2 cm, in standard form. 31. The population of the US is expected to be 392 million people by 2050. Write this answer in scientific notation. 37. Write 10^29 - 10^28 in scientific notation. Thanks! -Delilah :)
*September 28, 2012 by Delilah*

**7th grade math check my answers please quick**

11. 17, 200 written in scientific notation is 1.7 x 10^5 21. 0.00105 written in scientific notation is 1.05 x 10^-3 are these correct?
*September 28, 2012 by Delilah*

**7th grade scientific notation help Ms. Sue **

Write each number in scientific notation. 1. 4,800 2. 17, 200 3. 180,000 4. 343, 502 12. 0.00581 13. 0.00105 14. 0.0000078 15. 0.000027 16. 0.000000132 17. 0.000000009
*September 28, 2012 by Delilah*

**7th grade math - scientific notation help**

12. 0.00581 13. 0.00105 14. 0.0000078 15. 0.000027 16. 0.000000132 17. 0.000000009
*September 27, 2012 by Delilah*

**7th grade**

write in scientific notation: 1.7500 2.75000000 3.1250
*August 24, 2010 by christian*

**Math 11**

Scientific Notation question... It says put it in scientific notation and here is the question. 3100.0 x 10^2 But it's already in scientific notation... and I have no clue what to do... I've never done a question in scientific notation before... can someone please help me?
*September 9, 2007 by Karn*

**7th grade math help - quick, please.**

Write each number in scientific notation. 1. 4,800 2. 17, 200 3. 180,000 4. 343, 502
*September 27, 2012 by Delilah*

**7th grade Math quick help Ms. Sue**

Can you check to see if tese are right? 1. What is 0.68 written as a simplified fraction? 68/100 17/25 100/68 34/25 2. Mrs. Whimsey’s class is having a pizza party. If there are 16 students and 4 pizzas cut into 8 slices, what answer choice represents the fraction of one pizza...
*October 3, 2012 by Delilah*

**Math**

use the digits 1,2,3, and 4 to write a number in scientific notation that is close to .001 this was in a 7th grade algebra book... what? is this even possible without the use of 0?
*February 9, 2011 by Tokey*

**math**

HELP ME!!! One of your friends missed the class on scientific notation. Describe how you would explain to your friend what it means for a number to be in scientific notation and how to convert a number from standard form to scientific notation.
*January 10, 2011 by drew*

**Algebra Help!!**

Find an example of scientific notation in real life Explain why the number was written in scientific notation. Create a multiplication problem with scientific notation
*October 4, 2011 by Katie A*

**7th grade**

what is 344,000,000 in scientific notation?
*October 12, 2010 by Anonymous*

**8th Grade Math**

Express 18 million in scientific notation. I answered 1.8 x 10 to the 7th and was wrong. I don't understand why? You are supposed to move the decimal 7 places to get 18 million. What did I do wrong? Thank You.
*December 12, 2012 by Chris*

**Math - 8th grade**

Express 18 million in scientific notation. I answered 1.8 x 10 to the 7th and was wrong. I don't understand why? You are supposed to move the decimal 7 places to get 18 million. What did I do wrong? Thank You.
*December 12, 2012 by Chris*

**8th grade**

Is -7*10^11 in scientific notation? If not, write it in scientific notation.
*April 28, 2010 by Logan*

**7th grade math**

1. The area of Greenland is 840,000 square miles. What is this number in scientific notation? (1 point) 840 x 105 84 x 10–5 8.4 x 105 8.4 x 10–5 2. What answer represents this number in scientific notation? 0.00000916 (1 point) 916 x 10–8 9.16 x 10–6 916 x 108 9.16 x 106 3. ...
*September 26, 2012 by Delilah*

**math ALG 2!scientific notations helpp**

1.)Write the following value in scientific notation. 23,000,000 2.)Write the following value in scientific notation. 7,400,000 3.)Write the following value in scientific notation. 0.00000021 4.)Write the following value in scientific notation. 0.00003165 5.)Which value below ...
*March 15, 2013 by tyneisha*

**math ALG 2!scientific notations helpp**

Write the following value in scientific notation. 23,000,000 Write the following value in scientific notation. 7,400,000 Write the following value in scientific notation. 0.00000021 Write the following value in scientific notation. 0.00003165 Which value below is not ...
*March 15, 2013 by tyneisha*

**math**

Operations with scientific notation Perform the indicated operation. Each final answer must be written in scientific notation. 1. (2.34*10^5)*(-4*10^-8) 2. (4*10^3)*(4.5*10^-3) 3. (5*10^5)*(4.3*10^2)
*January 17, 2008 by shay*

**Math PLZ HELP**

1. Which of the following expressions is written in scientific notation? 1. 73.4 x 105 2. 0.09 × 107 3. 80 x 103 4. 4.22 x 10–3 2. Which of the following is 0.0000000708 written in scientific notation? 1. 7.08 x 10–8 2. 7.8 x 10–8 3. 708 x 10–10 4. 70.08 x 10–9 3. Which ...
*January 31, 2013 by SAMHAM*

**math**

1. Which of the following expressions is written in scientific notation? 1. 73.4 x 105 2. 0.09 × 107 3. 80 x 103 4. 4.22 x 10–3 2. Which of the following is 0.0000000708 written in scientific notation? 1. 7.08 x 10–8 2. 7.8 x 10–8 3. 708 x 10–10 4. 70.08 x 10–9 3. Which ...
*January 31, 2013 by ruby*

**math**

6.4 x 10^11 + 2.85 x 10^11 ( finding the sum written in scientific notation?) - 9.25 x 10^11 (my answer) - 9.25 x 10^22 - 92.5 x 10^-10 - 92.5 x 10^12 3 x 10^20/ 4 x 10^5 (write in scientific notation) - 7.5 x 10^3 - 0.75 x 10^4 (my answer) - 7.5 x 10^14 - 7.5 x 10^15 (6.2 x ...
*September 5, 2014 by Anonymous*

**8th Grade Math**

Question: a) Write in standard notation: 6.3 X 10 to the ninth power. b) Write in scientific notation: 0.00000047
*December 8, 2011 by ...*

**chemistry**

how to complete (2.8 x 10 to the 7th) x (8.8 x 10 to the 4th) in scientific notation
*September 9, 2012 by Jessica*

**7th grade math NASA problem**

5. NASA's apollo program lasted nine years (1963-1972) and included 6 moon landings. Write the cost of the Apollo project, $25,000,000,000, in scientific notation. Is the answer 2.5 x 10^10????
*September 28, 2012 by Delilah*

**math**

Multiply and write it in scientific notation. (8*10^3)*(7*10^5) A.5.6*10^16 B.5.6*10^9 C.1.5*10^16 D.1.5*10^9 Is the answer A? I really don't know how to do scientific notation😱
*May 18, 2015 by aloha*

**PHYSICS**

Express following measurements in scientific notation. 1. a) 5800 m I don't even get what scientific notation is. In my book its ays, that in Scientific notation, the numerical part of a measurement is expressed as a number between 1 and 10 multiplied by a whole-number power ...
*September 8, 2011 by Anonymous*

**Math**

Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three decimal places. 6.2 • 107 / 4.15 • 103
*March 1, 2011 by Jackster*

**simple math**

If a= 9990.9 and b= 9886.1. First, convert these to scientific notation. If only three significant digits are allowed in decimal portion (mantisa) of the scientific notation and chopping and not rounding is used, what is a-b?
*September 14, 2013 by sara*

**Math**

Hi everyone! I am extremely struggling with this questions and was hoping someone would go over them with me. Thank you! 1. Which of the following expressions is written in scientific notation? a. 73.4 x 10^5 b. 0.09 × 10^7 c. 80 x 10^3 d. 4.22 x 10^–3 2. Which of the ...
*January 29, 2015 by Tia*

**math**

So, I have to turn the quotient answer into scientific notation.. (answer has to be in scientific notation) 6x10^24/ 8x10^8 - 7.5 x 10^2 - 7.5 x 10^15 - 0.75 x 10^3 *This is the one I pick* - 0.75 x 10^16
*September 3, 2014 by Anonymous*

**7th grade math standard form scientific notation**

In standard form: 5. 3.2 x 10^3 7. 4.1 x 10^8 9. Write the average weight of a blue whale, 2.6 x 10^5, in standard form. 15. 2.5 x 10^-3 17. 1.05 x 10^-2 19. Write the size of a grain of very fine sand, about 9.35 x 10^-3 cm, in standard form. Can somebody help? I have been ...
*September 28, 2012 by Delilah*

**Algebra 1**

Plz help me with the following problems. Simplify. 5^-1(3^-2) Simplify. mn^-4/p^0q^-2 Write a scientific notation. 0.0042 Write in standard notation. 6.12*10^3 Simplify. Write in scientific notation. 0.5(8 * 10^5) Simplify. Write in scientific notation. (9 * 10^-3)^2 Evaluate ...
*February 5, 2014 by Gabby*

**Scientific Notation**

I got all of them so far EXCEPT this one... help? Thank you! Convert the following into scientific notation: 1/137
*January 23, 2013 by Carl*

**scientific notation**

Express in scientific notation. Choose the answer with the proper number of significant figures. _____ 0.47 x 10-17 0.5 x 10-17 5 x 10-18
*October 17, 2014 by isaac clarke*

**8 grade math**

how can you express a number in expanded form and in scientific notation?
*September 30, 2009 by emily*

**Scientific Notation**

I'm having some trouble solving this problem: 32x10^2 / (4x10^2)^3 Is it possible to have a negative value in scientific notation?
*October 10, 2011 by Maria*

**BA**

use scientific notation to divide the two numbers, express answer using scientific notation, retain at least 3 decimal place for (8.4.10^6)/(5.97.10^2)
*February 24, 2012 by Dechols*

**scientific notation am i doing it right?**

write in scientific notation 1) 400,000 = 4x10^5 2) 5412= 5.412x10^3 3) 0.00056= 5.6x10^-4 4) 0.0000814= 8.14x10^-5
*May 25, 2013 by anonymous*

**Scientific notation**

Express in scientific notation. Remember, M must be a number 1 ≤ M < 10. 32,400 = 3.24-4 3.24*10-4 3.2400*10-4 the dash means to the 4th power
*October 17, 2014 by isaac clarke*

**Algrebra 1**

What are the practical uses of scientific notation? Why is scientific notation so important in modern-day society?
*June 26, 2012 by Liz*

**Math**

At Jefferson School, both 6th grade & 7th grade classes take a math test. The average score for the 6th grade is 80 and for the 7th grade is 90. If there are twice as many students, in the 7th grade as there is in the 6th grade, what is the average test score for both grades ...
*January 14, 2016 by Sidney*

**Intermediate Algebra**

Use scientific notation to divide the following 2 numbers .Express the answer using scientific notation; retain at least3 decimal places (9.4*10^6)/(4.97*10^2)
*March 27, 2012 by sherry*

**math((PLEASE HELP!))**

If two numbers are written in scientific notation. how can you tell which number is greater? Where on a number line does the value of a positive number in scientific notation with a negative exponent lie?
*November 27, 2012 by Maryam :)*

**algebra**

use scientific notation to multiply the following two numbers. Express the answer using scientific notation; retain all nonzero decimal places. (8.1*10^8)*(4.2*10^3)
*July 9, 2011 by sharron*

**Algebra**

Use scientific notation to multiply the following two numbers. Express the answer using scientific notation; retain all nonzero decimal places (1.9 • 10^4) • (8.4 • 10^5)
*January 2, 2012 by yolanda*

**algebra**

Use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three decimal places. (6.2 · 10^7) / (4.15 · 10^3)
*January 29, 2012 by jackie*

**Math**

Is 10.512 * 10^3 written in proper scientific notation? If not rewrite the number in proper scientific notation.
*November 14, 2013 by Alan*

**intermediate algebra**

use scientific notation to divide the following two numbers. Express the answer using scientific notation; retain at least three decimal places (8.4*10^6)/ (5.97*10^2)
*July 9, 2011 by swirl*

**scientific notation**

Express 2,750,389 in scientific notation I think it is 2.750389 x 10 6
*October 9, 2007 by john*

**algebra**

can you help me with the Lesson 9: Operations and Applications of Scientific Notation Connections Education 1205070 M/J PRE-ALG - T1 Unit 2: Rational Numbers test.What is the product of (5.1*10^3)*(3.2*10^3)? (please express your answer in scientific notation.)
*September 25, 2014 by jasmine*

**math**

. what are the steps to solve this problem? 0.000027/0.000009 requirements: explain how to use scientific notation to solve the problem describe how to divide written in scientific notation give your final answer in simplest form.
*November 12, 2014 by math help asap*

**algebra**

0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. I am re posting again because i need more help then what i got because i don't understand it
*October 13, 2015 by cheyann*

**algebra**

0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. I am re posting again because i need more help then what i got because i don't understand it
*October 14, 2015 by cheyann*

**Math! Please Check My Awnser!**

Hello! I need some help with math! I have tried to do this but I am unsure about my answers. My I will identify my answers with a "<--". Also, if I have missed one, please tell me the right answer! Also, Thanks for your help in advance! Have a nice day! 1. Which of the ...
*January 14, 2014 by Electro*

**7th grade**

a[n] ? is an ansewer to a scientific question
*September 25, 2009 by evelyn*

**Math**

1. What are the steps to solve this problem? 0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. • Give you final answer in simplest form. (5 points) Steve please help
*November 14, 2013 by anonymous*

**Scientific Notation**

Just started learning about the scientific notation, and its actually quite easy, but I dont know why im still struggling with it. For example it says express the following measurements in scientific notation: 5800m The answer is 5.8 * 10^3 What confuses me is that how do you ...
*September 9, 2011 by Anonymous*

**Math**

1. What are the steps to solve this problem? 0.000027 ÷ 0.000009 • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. • Give you final answer in simplest form. (5 points) I really need help with this ...
*November 13, 2013 by anonymous*

**scientific notation**

how can i put 10010 into a scientific notation We want the first digit from the left followed by a decimal then some power of 10 Here it's 1.001 x 10^?? How many decimals did we move to the left?
*September 12, 2006 by alejandra*

**Scientific notation. PLZ HELP!**

Express in scientific notation. Choose the answer with the proper number of significant figures. (3 x 104) (4 x 1023) = _____ 1227 12 x 1027 10 x 1027 1 x 1028
*October 17, 2014 by isaac clarke*

**Math**

What is 0.68 written as a simplified fraction? My answer is 17/25. What makes the statement true? 7^-2= My answer is 14. What is 308,745,538 is scientific notation? My answer is 3.1 x 10^8. What is the solution to (3 x 10^2) x (5 x 10^5)written in scientific notation? My ...
*October 13, 2015 by El*

**Math**

What is 0.68 written as a simplified fraction? My answer is 17/25. What makes the statement true? 7^-2= My answer is 14. What is 308,745,538 is scientific notation? My answer is 3.1 x 10^8. What is the solution to (3 x 10^2) x (5 x 10^5)written in scientific notation? My ...
*October 13, 2015 by Essie*

**math**

turn standard form into scientific notation: 1. 12457.686 m 2. 0.000065423 g 3. 128.90 g 4. 0.0000007532 m turn scientific notation back to standard form: 1. 1.37 x 10^4m 2. 2.875 x 10^2g 3. 8.755 x 10^-5g 4. 7.005 x 10^-3m
*May 21, 2013 by melves*

**Math**

How many 7th grade students are expected to move by the end of the year? If 12 students actually moved, did more or fewer 7th-grade students move than expected? Justify your answer. 6th-grade # of students: 250 % moves: 2% 7th-grade # of students 200 % moves: 4% 8th-grade # of...
*March 8, 2016 by Sid*

**scientific notation**

Write the number in scientific notation: 0.000375
*November 20, 2007 by Tabby*

**scientific notation**

simplify write in scientific notation (9x10^-3)^2
*September 15, 2011 by edna*

**scientific notation**

simplify write in scientific notation (9x10^-3)^2
*September 15, 2011 by edna*

**7th grade math (probability)**

I'm not sure how to answer this: 3. THe 7th grade wants to have a back-up representative just in case the first teacher is absent. Based on the same scenario as #2, if a math teacher was chosen to be the 7th grade representative, what is the probablility that the back-up drawn...
*March 30, 2015 by Alexis*

**7th grade**

what is the difference between physical science &scientific theory?
*August 17, 2009 by courtney*

**Maths;Check Answers Please :P**

1. Simplify. 5^–1(3^–2) My answer: 1/45 3. Write in scientific notation. 0.0042 My answer: 4.2 X 10^-3 4. Write in standard notation. 6.12 × 10^3 my answer: 6,120 5. Simplify. Write in scientific notation. 0.5(8 × 10^5) My answer: 4 x 10^5 6. Simplify. Write in scientific ...
*January 17, 2014 by Electro*

**Scientific notation**

Express in scientific notation. Choose the answer with the proper number of significant figures. 69,000,000,000 = _____ 69 x 109 6.9 x 1010 6.910 It has to be A, but I'm not exactly sure.
*October 17, 2014 by isaac clarke*

**Math**

(7.66 • 10^2)(6.29 • 10^-4) answer then convert to scientific notation. the answer I keep getting is 0.481814 the scientific notation I get from this is 4.81814*10^5 but i keep getting it wrong. Can someone please help me.
*June 16, 2010 by Becky*

**7th grade**

which must be considered whaen drawing a conclusion from a scientific investigation
*November 18, 2009 by Anonymous*

**7th grade**

here is my question: "A scientific ______ is an accepyed outcome that does not change."
*November 19, 2009 by Austin*

**help**

can someone help me with the pythagorean theorem? VERY HARD IM IN 7TH GRADE AND THIS IS SOME 7TH GRADE MATH HOMEWORK THAT I NEED HELP WITH!!!!!!!!!!!
*March 7, 2013 by juju*

**math**

(0.3 x 10^-6)/(3 x 10^-6) those are both in scientific notation, need answer in standard notation. don't know how to do it. :/
*May 2, 2009 by Anonymous*

**Math**

Describe and correct the error in writing the number 81,700,000 in scientific notation. Standard form 81,700,000 product form 81.7*100,000 scientific notation 81.7*10
*October 3, 2010 by Anonymous*

**scientific notation**

Express the answer in scientific notation to two decimals unless requested otherwise. A company produced 2,600,000 small appliances in one year and made a profit of $6,690,000. What was the profit on each appliance?
*March 20, 2009 by brad*

**8th Grade Connections Academy**

1. What is the product of (5.1 x 10^3) x (3.2 x 10^3)? (Please express your answer in scientific notation.) 16.32 x 10^6 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2. What is the product of (7.28 x 10^-2) x (9.1 x 10^-2)? (Please express your answer in scientific notation.) 6....
*January 8, 2014 by mtv*

**Algebra**

What is 0.68 written as a simplified fraction? My answer is 17/25. What makes the statement true? 7^-2= My answer is 14. What is 308,745,538 is scientific notation? My answer is 3.1 x 10^8. What is the solution to (3 x 10^2) x (5 x 10^5)written in scientific notation? My ...
*October 13, 2015 by Essie*

**math**

how to right this in scientific in scientific notation. (2.74×10^7)+(5.6×10^7)=
*March 14, 2016 by Gina-helen*

**Math**

1. –(10)^–1 (1 point) –1/10*** -1/-1^10 1/10 10 2. 1/c^-5 (1 point) c^5 5c –c^5*** –5/c 3. What is the value of y^-5/x^-3 for x = 2 and y = –4? (1 point) 10/3 128 -1/128 –128*** 4. Is the number written in scientific notation? If not, explain.5.1 × 10–8 (1 point) Yes; the ...
*April 22, 2016 by Bethany*

**Math/Standard and scientific notation**

Express each measure in standard form. (One more thing by the way you need this few prefixes) Tera= 10 to the 12th power Giga= 10 to the 9th power Mega= 10 to the 6th power Kilo= 10 to the 3rd power Pico= 10 to the -12th power Nano= 10 to the -9th power Micro= 10 to the -6th ...
*February 25, 2009 by Sandy*

**Homework help plz( Steve or Reiny)**

Determine if the number is written in scientific notation. If not, explain 32 * 10^4. (1 point) No; it is not written as a power of 10. No; the first factor is not a number between 1 and 10. Yes; the number is written in scientific notation. Determine if the number is written ...
*February 20, 2014 by Gabby*

**Algebra 1 (Scientific Notation)**

How will you write this in scientific notation? if you do not mind explaining how you did it. Thank you! $15,789,000,000,000
*June 28, 2012 by *Please Help**

**Math Scientific Notation**

write the scientific notation 1) for 25,000,000 i got: 2.5 x 10^7 2) 4,562,000,000 i got: 4.562 x 10^9 3) 1,250 x 10^5 im stuck on this one i think its: 1.25 x 10 ^ 8 are these right?
*December 19, 2011 by marko *

**Alegbra**

The distance from the Earth to the sun is 93,000,000 miles? Write this number in scientific notation. A scientist measures a speck of sand as having a diameter of 0.00000034? Write this number in scientific notation.
*March 12, 2014 by WillyB*

**7th grade math**

My friend is in the 7th grade and broke his wrist so he cannot type. Wat is the square root of pi.He said he knows pi=3.14 but he doesn't know how to work it out. He said thanks.
*March 5, 2012 by running.from.myself*

**algebra**

0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. • Give you final answer in simplest form. (5 points) i already have the answer,0.000027 ÷ 0.000009=3
*October 13, 2015 by cheyann*

**Algebra**

Find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose pH is 13.3. (If you enter your answer in scientific notation, round the decimal value to one decimal place. Use equivalent rounding if you do not enter your answer in scientific notation.)
*March 30, 2016 by Lisa*

**math**

A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at a speed of 100Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places using scientific notation. ...
*April 27, 2010 by Peter*

**7th grade**

I am trying to unscramble ecrfenine in my science homework and cannot get an answer. My mom has read the whole chapter as well with me and we cannot find it. It has to do with scientific method.
*August 18, 2010 by kaitlyn*

**math...please help asap**

Solve the following; use proper fractions in your answer: 1. 1/3 + 1/4 = 7/12 2. 4/5-2/3 = 2/15 3. 5/6 * 4/5 = 2/3 4. 3/7 divided by 6/8 = 4/7 5. 3 1/4 - 1 3/8 = 1 7/8.....is this a proper fraction? 6. 5 8/9 + 2 4/7 = 8 29/63..is this a proper fraction? Reduce the following: 7...
*August 18, 2006 by anonymous*

**Math**

Suppose it takes 3 days for a space vehicle to travel from the earth to the moon. About how long would it take the same vehicle traveling at the same speed to Venus? Moon= 240,000mi Venus=26,000,000mi Round to the nearest whole number. Use scientific notation. I know it is 325...
*May 13, 2011 by Bkp*

**Math**

Please help with the following questions: 1. write 12 million in scientific notation 2. Write 17,600 in scientific notation 3. write 1.2 * 10 to the fourth power in standard form 4. write 5 * 10 to the sixth power in standard form
*February 4, 2013 by Alex*

**MATH**

a. Write the scientific notation b. Write the result in ordinary decimal notation. can you do this one so i know how to do the others (2.9 x 10^3)(3.0 x 10^-3)
*November 9, 2011 by Adam*

**7th grade**

I was wondering if there were any sample placement tests that I could give to my son who is currently in 7th grade homeschool.
*June 2, 2010 by Brenda*

**7th Grade**

I just wanna know anyone who's been in 7th grade what do you learn in science mostly throughout the year??
*September 16, 2013 by Anonymous*