Students will use the mental math strategy of making ten to find the sum in equations with three addends
A. Reinforce knowledge of numbers 11-20 by adding a single digit to the number ten
B. Discover the addends to make ten
C. Determine the missing addend
D. Practice with ten frames
E. Use ten frames to explore equations and determine the sum
F. Use base ten blocks to make ten then find the sum
G. Use base ten blocks to determine the sum
H. Introduction to equations with three addends
J. Decomposing addends in order to make ten then adding to find the sum
K. Continued practice decomposing addends to solve an equation
L. Demonstrate knowledge of missing addend to make ten
M. Use the strategy of making ten to solve addition equations
N. Solving using a number bond
O. Using number bonds to solve addition equations
P. Continued practice using number bonds to solve addition equations
Q. Demonstrate proficiency or practice with assistance
R. Solve the addition equations with sums of 11-16 to combine objects
S. Solve the addition equations with sums of 11-16
T. Solve the addition equations with regrouping