Subtraction Strategies with Tens Frames

Mr. Walker introduces a subtraction strategy using a tens frame. The strategy involves making a 10 first by counting up from the number being subtracted, then continuing to count up to find the answer. Two examples are provided: solving 15 - 9 and 13 - 9 using this method. Students are encouraged to practice using Nearpod slides, where they will decide the starting number, draw counters, and write their answers.

What is the main focus of the lesson introduced by Mr. Walker?

• Addition strategies

• Subtraction strategies

• Multiplication strategies

• Division strategies

What is the goal of the new subtraction strategy using a tens frame?

• To make a 5 first

• To make a 10 first

• To make a 15 first

• To make a 20 first

In the first example, what number do we start with when using the tens frame?

• 15

• 9

• 6

• 10

How many counters are needed to fill the first tens frame in the first example?

• 15

• 5

• 9

• 10

What is the final answer to the subtraction problem 15 minus 9 using the tens frame?

• 8

• 7

• 6

• 5

In the second example, what is the subtraction problem being solved?

• 15 minus 9

• 12 minus 9

• 14 minus 9

• 13 minus 9

How many counters are added to reach the number 13 in the second example?

• 6

• 5

• 4

• 3

What is the final answer to the subtraction problem 13 minus 9 using the tens frame?

• 6

• 5

• 4

• 3

What is one way to check the answer in the second example?

• By counting the remaining counters

• By using a calculator

• By adding 9 to the result

• By subtracting 9 from 13

What tool are students instructed to use for practicing the strategy?

• Kahoot

• Nearpod

• Quizlet

• Google Classroom