Curated OER
The Facts, Gimme the Facts!
Learners engage in a variety of activities which help them memorize their times tables. There are some very good ideas imbedded in this plan of how to systematically teach the basic facts in a way that help students retain what they learn.
Curated OER
Clock Arithmetic and Cryptography
Students investigate modular clock arithmetic and cryptography. They perform basic operations in modular (clock) arithmetic and encode and decode messages using simple shift and affine ciphers.
Curated OER
Dividing by 4's
Third graders explore math functions by completing problem solving activities. In this division lesson, 3rd graders utilize the division strategies acquired earlier to divide multiple digit numbers by 4's. Students complete problems on...