Students learn that finding the number that comes before another on a number path is the same as subtracting 1. Then they solve word problems and complete subtraction equations by subtracting 1
A. Solve addition equations by adding 1
C. Review that 0 represents no objects
D. Add 0 to a number
E. Subtract 0 from a number
F. Add or subtract 0 from a number
G. Add sets of concrete objects to complete a ten-frame
H. Identify the amount of concrete objects needed to make 10
I. Identify amounts that make 10 when added together
J. Identify pairs of numbers that make 10
K. Identify the missing addend to make 10