How to use a thermometer to measure air temperature

Hold the thermometer at the top.
Put your eye level with the top of the liquid in the thermometer to read the scale.
Do not hold the bulb as the thermometer will measure the temperature of your fingers.

How to use a thermometer to measure the temperature of a liquid

Hold the thermometer at the top.
Wait until the thermometer reading stops changing
Read the scale before you take the thermometer out of the liquid.
Put your eye level with the top of the liquid in the thermometer to read the scale.
Make sure all of the bulb is in the liquid.
This liquid is at 43°C.

How to use a stopwatch to measure time

Find the 'Start', 'Stop' and 'Reset' buttons on the stopwatch.
Check you can start, stop and reset the stopwatch.
Watch to see which digits count the seconds.
The two smaller digits count hundredths of a second.

Drisha and Idra are timing how long ice takes to melt.
The ice in the sun melted in just over three minutes and thirty five seconds.

The ice in the shade melted in five minutes forty eight and a half seconds.

How to plan a fair test

To plan a fair test you must only change one variable in the test. All other variables must be kept the same.
Suk and Pembe are investigating which materials are better at stopping sound.

The variable they are changing is the material being used.
To keep the test fair, Pembe must hold the materials the same way each time.
Suk must also keep the loudness of the triangle the same.
The distance from Pembe's ears to the triangle should also be the same.

How to design a bar chart

Olga and Sam have been counting the living things they find in the garden.
They have made a tally chart to show how many of each sort they have found.

Number of living things found
	birds
	worms
	ants
	spiders

They want to draw a bar chart on squared paper,
First they have to draw the axes for the chart using a ruler.
To decide how tall to make the y-axis they look at how tall the bars will be. They saw 12 ants, so the tallest bar will go up to 12 on the y-axis.