Weeks 10-12 – Subtraction Foundations
Subtraction Foundations introduces your child to subtraction concepts in a hands on method helping to insure that your child understands these concepts.
You may feel that your child is ready for this activity prior to completing the first nine weeks of activities. Skipping weeks is highly discouraged, even for children who already know how to count backwards.
Students will be shown two big yellow boxes, and one small yellow box. Inside of the first large box will be displayed a random number of shapes between 1 – 10. Students are asked to listen as the computer counts the shapes in the first. The computer will then move a random number of shapes from the first box to the second box, counting as it does so. Students are then asked to enter the number of shapes remaining in the first box into the third box.
If a correct answer is supplied by the child, then a green light flashes, and the computer counts all the remaining shapes.
Use Math Vocabulary:
Encourage students to say the following or a similar sentence out loud with each new math problem. “seven minus two equals five “. Replace the numbers in this sentence with the actual numbers for each problem.