NUMBER OPERATIONS

April 15, 2020


Practicing Number Operations: 

Lock & Key Activity 

Lock & Key Addition Puzzles for Kids

Number operations prepare students to understand real world discussions within counting, such as How many are left? and How many more are there?
Lock and Key Addition puzzles is an advanced level of number sense for students to match the correct number to the addition. Once students have become familiar with symbols for factorization, this activity would be suitable for students to practice on their own or in groups (Brownell, 2014).

You can find the original post of this activity here. You can create your own layout or purchase the activity document for $3.50 here.
Brownell, J. O. N., Chen, J.-Q., Ginet, L., Hynes-Berry, M., Itzkowich, R., Johnson, D., & McCray, J. (2014). Big ideas of early mathematics: what teachers of young children need to know. Boston: Pearson.


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