Students will use base-10 blocks to model adding groups of ten to a two-digit number. Students break the two-digit number into tens and ones, and add the groups of ten together before adding the ones to find the sum. Students then solve without models
A. Review addition facts with a sum of 10
B. Adding to groups of ten
C. Use models to practice addition equations with a one- and two-digit addend
D. Solve addition equations with a one- and two-digit addend
E. Use models to solve subtraction equations with a one- and two-digit number
F. Solve subtraction equations with a one- and two-digit number
H. Adding one- and two-digit numbers
I. Use models to solve subtraction equations with two-digit number
J. Add groups of ten to a two-digit number (Part 2)
K. Develop fluency with addition and subtraction of one- and two-digit numbers