LENGTHHEIGHTWIDTH

Workshop

WHAT IS LENGTH, HEIGHT AND WIDTH? Write down what you think these things are Share your ideas with someone else in your group Use the mathematics dictionary at the bottom of

your Smart Kiddies personal page to find out what the mathematical definition of these things is.

Spheres click here Cubes click here Rhombus click here Dodecahedrons click here

WHAT DO WE USE TO MEASURE THE HEIGHT, LENGTH OR WIDTH OF SOMETHING?

We use lots of different objects to measure with.

Each object usually has one or two units of measurement on it.

How many different measurement units can you think of to measure height, length and width?

Here’s a hint ---- centimetres

WHAT DO WE USE TO MEASURE THINGS? Our length, height and width measuring

toolbox could include these units of measurement

MetresMillimetresKilometres

HOW DO WE CHOOSE WHICH ONE TO USE? That’s a difficult question to answer Usually you choose units that are going

to make sense for the problem you are working out.

We tend to change to a bigger unit when it is going to take us a long time to measure something in the smaller unit

It takes practice and careful thinking to choose a measurement unit

WHICH MEASUREMENT UNIT WOULD WE USE FOR…?

Millimetres Centimetres Metres Kilometres

•The height of a house•The height of a person•The width of your desk•How long our field is•The distance someone has been on a run•The distance from Auckland to Hamilton•The length of a pen•The thickness of your reading book• The thickness of your ruler•How tall your are

WHICH MEASUREMENT UNIT WOULD WE USE FOR…?

Millimetres Centimetres Metres Kilometres

The thickness of your reading bookThe thickness of your ruler

The width of your deskThe length of a pen

The height of a houseThe height of a personHow long our field isHow tall your are

The distance someone has been on a runThe distance from Auckland to Hamilton

HOW DO WE MEASURE? Explain how to measure the line below

using a ruler Measure the line by following one of

your group mates instructions Do you all get the same answer? Why?

Why not? What things do you need to be careful

with when trying to measure something?

MORE LENGTH PRACTICE Go to the Rainforest Maths website and

complete the length activities there

Our username is: xxx Our password is: xxx

Start at year 3 level on the length activities

Continue working on the length activities until we change mathematics activities.