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Level One > Number and Algebra

# Fly Flip

Achievement Objectives:

Specific Learning Outcomes:

Solve addition problems to 20 by joining sets and counting all the objects.

Description of mathematics:

Number Framework Stage 2

Required Resource Materials:
Fly flips (Material Master 4-5)
Activity:

Problem: “There are eight flies on this fly flip. (The students can see the eight on the bottom and five flies on their side of the fly flip.) How many flies are on the other side?” Record 5 + ? = 8 on the board or modelling book. Encourage the students to model eight as five fingers and three fingers and then work out that there must be three flies on the reverse side. Record 5 + 3 = 8 on the board or modelling book.

Examples: Repeat for the nine, five, six, 10, and seven fly flips.

Problem: Show the students the eight fly flip with three flies visible to them. Ask how many flies they can see and then what number they can see. Discuss how many flies are hidden from the students. The students use their fingers if needed. Discuss the answer and record 3 + 5 = 8 on the board or modelling book.

Examples: Repeat for the nine, five, six, 10, and seven fly flips.

## Ten Sweets Per Packet

Recall the facts up to 10, and the teen facts.

## Crossing the Five Barrier

Solve addition problems to 20 by counting all the objects in their head.

Solve subtraction problems from 20 by counting all the objects in their head.

## What's Hidden?

Solve subtraction problems from 20 by counting all the objects in their head.

Recall facts within 5, and doubles to 10.

## Using One Hand

Solve addition problems to 20 by counting all the objects in their head.

Solve subtraction problems from 20 by counting all the objects in their head.

Recall facts within 5, and doubles to 10.

## Imaging Many Hands

Solve addition problems to 20 by counting all the objects in their head.

Solve subtraction problems from 20 by counting all the objects in their head.

Solve subtraction problems to 100 by counting back in their heads.