This product includes a variety or resources to begin teaching addition and subtraction within 20. Below is what you will find in this pack:
Learning Target: I can fluently add and subtract within 20 using mental strategies.
Success Criteria: What students will need to know or be able to do in order to meet the learning target.
Strategy Posters-There are posters for the following addition and subtraction strategies:
Addition-Plus 0, Plus 1 and 2, Partners of 10, Doubles, Near Doubles, Plus 10, Plus 9, Use a 10, Make a Double
Subtraction-Minus 0, Subtract All, Minus 1 and 2, Partners of 10, Doubles, Use a Double, Minus 10, Minus the Ones, Minus 9, Count Up, Use a 10, Use a Related Addition Fact
Strategy Development: There are strategy/vocabulary posters students can complete on their own, with partners, or in groups that require students to define the strategy, draw a picture, give examples and nonexamples.
Assessments-There are timed test for all of the strategies above (except count up and use a related addition fact). Each timed test has 12 mixed problems. There are also 4 timed tests that have mixed strategies. There are assessments that also require students to explain their thinking.
Data Collection-There are forms to record how students did on the timed assessments to guide instruction.
Adding More Rigor to This Target: Included are directions and materials for students to sort facts and analyze errors. More information is given in that section of the packet. I gradually introduce these centers over the course of the first 6 to 8 weeks. They would be easy to adapt for when you move on to multi-digit addition and subtraction.