# Cuisenaire Rods

https://www.ncetm.org.uk/files/110720776/ncetm_ks3_cuisenaire_rods.pdf This document from the NCETM gives a good introduction to Cuisenaire rods with lots of examples.

Below are a few more ideas you can try. I recommend that you try these for yourself with a set of rods or using interactive rods online. https://mathsbot.com/manipulatives/rods

## Fractions

If light green represents 1 what do the other rods represent?

If yellow represents 1 what do the other rods represent?

If green represents 1 what do the other rods represent?

If orange represents 1 what do the other rods represent?

If red represents 1/5 what do the other rods represent?

If red represents 1, show me 2 of ½ and ½ of 2.

If light green represents 1, show me 2 of 1/3 and 1/3 of 2.

This is a nice task to try with years 7 to draw out prior knowledge and misconceptions. You can link this to equivalent fractions, improper fractions, decimals and percentages.

### Adding Fractions

Paul Nwaolise

Enigma Secondary Teaching for Mastery Lead

Create your own fraction walls.

### Dividing Fractions

Using rods allows students to see division of fractions as grouping (lots of).

Have a google search for Cuisenaire rods and you will find lots more on fractions.

## Mean

## Sequences with Cuisenaire rods

The rods on the left form the sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ...

The first term is always made from white rods. Each white rod is one unit in length.

The third term is always made from light green rods.

Light green rods are equivalent to 3 units.

The tenth rod is equivalent to 10 units.

How many units will the 100^{th} rod be equivalent to?

How many units will the n^{th} rod be equivalent to?

The rod size **varies** or changes depending on its position in the sequence.

We call this a **variable**

**Rules for building sequence**

The first term you can use units

The second term you can use red rods and units

The third term you can use light green rods and units

The fourth term you can use pink rods and units etc