Curated OER
Relate Addition and Subtraction Reteach 14.7
Introduce young scholars to relationship between addition and subtraction with this very simple worksheet. There are 2 problems to solve, each problem shows unifix cubes relaying an addition problem and its subtraction companion.
Illustrative Mathematics
1.OA, NBT, The Very Hungry Caterpillar
First graders are exposed to addition of three whole numbers in a math activity centered around Eric Carle's, The Very Hungry Caterpillar. As the teacher reads, young mathematicians use counters and ten-frames to symbolize the number of...
Oregon Department of Education
Building Number Sense
It's never too early to begin a child's math education. This collection of fun hands-on activities engage youngsters in building their number sense as they learn how to count objects, identify numerals, compare amounts, and much more.