This google slide show is for use with grade 1 students as a routine to build number sense. Strings of addition expressions are used to build connections and as a springboard for discussion. Each slide has a target addition strategy, though other strategies are encouraged as well.

This google slide show is for use with grade 2 students as a routine to build number sense. Strings of expressions are used to build connections and as a springboard for discussion. Each slide has a target addition strategy, though other strategies are encouraged as well.

In this lesson, students practice addition (subtraction optional) and deductive reasoning skills to solve KenKen puzzles, which is a break off of the Sudoku puzzle.  All of the directions of what a KenKen puzzle is and how to use them are included in the resource in detail.  The students investigate as a group what they think is happening in a completed puzzle.  In this way they are using the Math Practice Standards MP1 and MP7.  Once they understand the rules, they will work on solving problems using addition and possibly subtraction.