Place the following list in order from least to greatest.

-.5,- Square root of 4, -1.5, and 3/8

To place the list in order from least to greatest, we need to compare the numbers and arrange them accordingly. Let's go through each number in the list and compare them one by one.

First, let's compare -.5 and -1.5:
Since both numbers are negative, we can compare their absolute values. The absolute value of -.5 is greater than the absolute value of -1.5, so -.5 is actually greater than -1.5.

Next, let's compare -.5 and the square root of 4:
The square root of 4 is 2, so we need to compare -.5 and 2. Since -.5 is negative and 2 is positive, -0.5 is less than 2.

Then, let's compare -1.5 and the square root of 4:
Again, the square root of 4 is 2, so we need to compare -1.5 and 2. Both numbers are negative, so we can compare their absolute values. The absolute value of -1.5 is less than the absolute value of 2, which means -1.5 is less than 2.

Finally, let's compare 3/8 with the other numbers:
To compare a fraction with decimals, it is often helpful to convert the fraction to a decimal. In this case, 3/8 is equal to 0.375. Now we can compare 0.375 with the other numbers.

Putting it all together, the list in order from least to greatest is:
-1.5, -.5, 3/8, √4