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Level One > Number and Algebra

# Number Line Flips

Achievement Objectives:

Achievement Objective: NA1-2: Know the forward and backward counting sequences of whole numbers to 100.
AO elaboration and other teaching resources
Achievement Objective: NA2-2: Know forward and backward counting sequences with whole numbers to at least 1000.
AO elaboration and other teaching resources
Achievement Objective: NA3-3: Know counting sequences for whole numbers.
AO elaboration and other teaching resources
Achievement Objective: NA3-4: Know how many tenths, tens, hundreds, and thousands are in whole numbers.
AO elaboration and other teaching resources
Achievement Objective: NA4-6: Know the relative size and place value structure of positive and negative integers and decimals to three places.
AO elaboration and other teaching resources

Specific Learning Outcomes:

Say the forwards and backwards number word sequences in the range 0–10.

Say the forwards and backwards number word sequences in the range 0–20.

Order the numbers in the range 0–20.

Order numbers in the range 0–100.

Order the numbers in the range 0–1000.

Order whole numbers in the range 0–1 000 000.

Read decimals with tenths, count forwards and backwards in tenths, order decimals with tenths.

Identify and order decimals to three places.

Description of mathematics:

Number Framework Stages 1-7

Required Resource Materials:
Whole Number line flips (Material Master 4-2)
Decimal Number line flips (Material Master 4-31)
Activity:

Give the students an empty number line that shows only the numbers at the start and end. The  other numbers are shown on the reverse side as a reference. Have the students place a peg, or paper clip, on the number line and ask their partner to guess which number the peg is on. If the students have difficulty to start with, their partner can help by pointing to and saying reference numbers close to the pegged number. For example, “I am pointing to 15. What number is the peg on?”

#### Extension Activity

Get the students to develop their own number line flips for other sequences, such as the whole numbers between 40 and 60, the multiples of three between 0 and 30, the decimals, in tenths, between 4.7 and 7.2, the fractions in fifths between 0 and 2.6.