Scholastic
Study Jams! Relate Addition & Subtraction
Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...
Curated OER
An Easier Way to Count: Using Groups of 10
Young scholars explore their counting skills. In this counting lesson, students group objects in sets of 10 to practice counting them. Young scholars also practice graphing the sets of objects they count. This lesson...