Students will use base-10 blocks to model counting backwards by 1s from 10, finding "one less" each time. Then, using the base-10 blocks as a model, students will count the number of objects in a set, then take away one to find one less
A. Count and explore the concept of one less
B. Explore the concept of one less with cube models
D. Explore the concept of one less on a number path
E. Explore the concept of one less using real-world objects
F. Exit ticket: 1 more and 1 less with numbers up to 10
G. Pretest: 2-D shapes and types of lines