Students observe models and choose the correct corresponding addition sentence or select the correct model based on a given addition sentence
B. Write addition sentences based on a model and see that different combinations of addends can result in the same sum
C. Select models that show the same sum and match a model to the correct equation
D. Sort items by shape and color to create addition models. Identify whether the sums are the same or different in two equations
E. Observe models and write many addition equations with the same sum
F. Solve simple word problems with the help of a model and learn where to place the plus sign
G. Solve word problems by selecting the addition equation that best represents it