Illustrative Mathematics
Illustrative Mathematics: Hitting the Target Number
The purpose of this task is to help learners develop flexible strategies for adding and subtracting within 20. Students will pick 5 number cards from pre-made cards labeled 1-10. Then, another student will pick a "target number" between...
Illustrative Mathematics
Illustrative Mathematics: 1.oa, Nbt the Very Hungry Caterpillar
This lesson plan uses the book The Very Hungry Caterpillar to teach students to add three numbers to get a sum less than 20.