By Marlene Kliman, TERC In the curriculum Investigations in Number, Data, and Space, students develop knowledge of the addition pairs to 10 + 10 beginning with activities in kindergarten and continuing through grade 3.
The goal is for students to become fluent with all the pairs (as well as with many other number combinations).
Fluency means that students can use these number pairs quickly and easily as they solve problems.
They combine amounts up to about 6 with totals up to about 12, with an emphasis on combinations of 5 and 6.
Most students model the problem with objects or pictures and count them to find a total.
Over th...
Allowed
Microsoft Office Word (.doc, .dot) - application/msword
... 
