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Secret Codes

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Purpose

This is a level 3 number activity from the Figure It Out series. It relates to Stage 6 of the Number Framework.
A PDF of the student activity is included.

Achievement Objectives
NA3-2: Know basic multiplication and division facts.
AO elaboration and other teaching resources
Student Activity

Click on the image to enlarge it. Click again to close. Download PDF (202 KB)

Specific Learning Outcomes

know multiplication facts

know division facts

Required Resource Materials
FIO, Level 2-3, Basic Facts, Secret codes, page 17
Activity

Activities One and Two

Students will enjoy making up their own codes for others to solve. It is important for them to realise that the answers that match given letters must have a number of possible facts in case that letter is used more than once. A process for making such codes is:

flow chart.


Answers to Activities

Activity One
If you multiply a number by zero, the answer will be zero.
Activity Two
A blue whale may weigh 134 tonnes.

Attachments
SecretCodes.pdf201.04 KB
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Level Three