Students are introduced to the terms "addend" and "sum." They identify addends and the sum in equations
A. Count two addends and determine the total
B. Determine total number of objects and determine its two addends
C. Use the + and = signs in an equation
E. Compose an addition equation based on a picture
F. Represent objects with cubes
G. Compose addition equations based on cubes, and solve equations with and without cubes
H. Solve addition equations