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Level Two > Number and Algebra

Adding in Parts

Achievement Objectives:

Specific Learning Outcomes: 

Solve addition and subtraction problems by going through tens.

Description of mathematics: 

Number Framework Stage 5.

Required Resource Materials: 
Bundled sticks or BeaNZ in canisters (tens and ones).
Two blank Tens Frames (Material Master 4 -6)
Counters
Or Magnetised Ten Frames board with mangets
Activity: 

Using Materials

Problem: Peter has 8 oranges and 6 apples. How much fruit has  he got altogether?

Record 8 + 6 on the board. Model 8 on a tens frames. Ask the students, without

touching the tens frames, to say where 6 more go. And then say what 8 + 6 equals.

Invite a student who says 14 is the answer to come and demonstrate how they got the answer. Record 8 + 6 = 14 on the board.

Examples. Word stories and recording for: 5 + 6, 9 + 7, 8 + 5, 7 + 6, 8 + 7, 4 + 8, 3 + 9….

Problem: Tere has $38 and saves $5 more. How much money does he have left?

Record 38 + 5 on the board. Let students model 38 with bundled sticks or BeaNZ in

canisters. The students make a bundled ten to get the answer. Discuss how the students get 43 as the answer.

Examples. Word stories and recording for: 45 + 6, 29 + 7, 8 + 45, 7 + 46, 28 + 7, 4  + 28, 33 + 9….

Using Imaging

Shielding: Problem: 38 + 7 equals what?

For a problem like 38 + 7 the students need to make the connection that removing 2

from the 7 and adding it to 38 creates a 40. There is 5 left so the answer is 45. For

those students who do not make the connections fold back to showing the materials

and work through the solution.

Shielding and Imaging Only:

Examples. Word stories and recording for: 35 + 7, 42 + 9, 6 + 38, 6 + 35, 36 + 8, 5 + 36….

Using Number Properties

Examples. Word stories and recording for: 75 + 8, 9 + 48, 6 + 67, 75 + 7, 74 + 7,

94 + 7, 9 + 89....


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