Idea 1of 12
A start line
Where do you measure a walk from?
Today you'll discover
- why a place needs a line to measure from
- that you choose where that line goes
- what changes when the line moves
Think firstA figure on a line. Where is she?
Can you say where she is?
Decide first, then press Next. The flag arrives, then the note, then a measured place.
A ground line marked in metres with a standing figure on it and no flag. Pressing Next plants a small flag on a pole at the zero mark, then adds a boxed note in the top-left corner saying east is positive with an arrow pointing right, then walks the figure east and lays a thick bar along the ground from the flag to her feet, labelled six metres east of the flag. The last step asks where she is once the flag is moved.
See the whole ideathe big idea and the key word, in one place
The big idea
A start line you choose: the origin. Measure everything from it.
Where it goes nextEvery number on the next eleven cards is measured from this flag, and the corner note says which way is forward.
Key word
- origin
- the start line every position is measured from, chosen by you
Ready to use it?
- Say where a walker is, measured from the flag.