is a playful activity that gives pupils the opportunity to explore different ways of measuring length/distance. It could lead into considerations of standard and non-standard units of measure, and will certainly involve children comparing lengths/distances.
You may need to consider whether this is for the whole class or a group at a time.
Make sure that there is a suitable slope to use and there are small cars available, and allow the children to explore as you stand back. You may need to encourage some sort of measurement but try not to impose particular ways of measuring, rather let learners try out their own.
After a suitable length of time, you could draw the whole group together to share the different ways they measured. If appropriate, you could begin to discuss which way/s might be most helpful and why.
Which car went the furthest?
How far did that car go?
How do you know?
How much further did that car go than the next car?
Some children could be encouraged to find ways of recording the distances for the three cars and then for every car that the group/class used. Talk about what they can find out from their recordings.
Some children may need some support if their fine motor skills prevent them from holding the car at the top of the slope and carefully letting go. This may also apply to the use of any measuring equipment that may be used.