Ray's New Primary Arithmetic by Joseph Ray Ray's New Primary Arithmetic by Joseph Ray    

Lesson 37: Subtraction

Directions

Have children complete the below word problems by referring to the image.

Have children practice until they perfectly master the task.

Steps

STEP 1

• Show the picture and read the associated problems below aloud.
• Direct children to mentally compute and recite the solutions.

STEP 2

• If children have difficulties, practice the subtraction problems with physical objects such as coins, beans, or toys.
• Once children master the problems with physical objects, have children retry the mental computation.