Here is a line with nothing on it but a 0 at one end and a 1 at the other. There are no other marks yet.
Where would you put 0.5 on this line? Point in the air with your finger before anyone says a word.
The interactive shows a number line from 0 to 1, marked every 0.1, with a decimal on it. Watch where each marker lands and think about why. Before the last one, decide whether 0.08 is more or less than halfway to 0.1.
Today we place these decimals on the line together, in this order: first 0.2, then 0.65, then 0.9, and finally 0.04. Each one sits in a slightly trickier spot than the last, so we'll predict where it lands before we drag the marker.
In your maths copy, sketch a number line from 0 to 1 with a mark every 0.1. Then mark each of these decimals on your line and label each mark with its value:
Today we work through these placements together: place 0.7, then 0.34, then 0.08, and finally find a decimal that sits between 0.4 and 0.45.
For that last one, remember that the gap between 0.4 and 0.5 can be split into smaller hundredth steps: 0.41, 0.42, 0.43 and 0.44 all live in there. Which of those sit before 0.45? Any decimal between 0.4 and 0.45 counts, so think carefully about which two marks it must live between before you drag.
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