Goals  Part 5
My
goals in helping children with arithmetic are simple. I want them

5. What Does It Mean To Be Good At Solving Word Problems?
As a first step, certainly by the time they turn 7 years old, children should have the ability to solve each of the 12 types of word problems by making the appropriate model and counting.
As 7 and 8year olds, they should grow in their ability to solve word problems
 using more and more shortcuts,
 using those shortcuts more and more fluently, and
 using shortcuts that are more and more effective in the context of the problems that they are trying to solve.
In this
video Eva makes a novel argument to solve a subtraction problem.
Her thinking is excellent, but hardly fluent.
In this video
Rose starts to solve a multiplication problem using one shortcut – but
then realizes that she has a more effective method.