Length word problems

The first instance of  is under the Early Math Math Mission. This exercise mixes algebra and geometry together in a very nice way.

Types of Problems
There are two types of problems in this exercise:


 * 1) Solve the problem: This problem describes a word problem situation and asks the student to find the solution which they enter in an answer box.Lenwp-1.png
 * 2) Use the picture to solve: This problem encourages students to think about and prepare for other measurement problems by drawing a picture and using measurement to solve a word problem.Lenwp-2.png

Strategies
This exercise is easy to get accuracy badges because there is a general predictability to problems. This also effects speed badges, but only makes them medium difficulty because care needs to be taken to read the problem carefully.


 * 1) Most (but not all) of the first type of problems are of the same form. The answer to this form is always 2*(first number)+(second number). There is a subtraction problem thrown in occasionally to discourage complacency.
 * 2) The subtraction problem type one and the only (as far as research can tell) problem type two appear to have been thrown in to discourage mechanical performance of this problem.