Teaching article
A quarter turn needs a starting direction and a turning direction
Keep a visible reference direction while turning an object through one of four equal rotations.
Mark the arrow's initial orientation before moving it. Clockwise and anticlockwise quarter turns can lead to different endpoints, so naming the amount alone leaves the instruction incomplete.
An arrow pointing up can point right after a clockwise quarter turn; the starting reference makes the change clear.
Follow the orientation through the turn
- Mark the starting direction.
- Make one quarter turn.
- Compare the new orientation.
Keep the starting direction visible and name clockwise or anticlockwise. The turn amount alone does not identify the final orientation.
Name the direction of rotation. What would complete a full turn?
Rotate a large physical arrow.
Resources
- Reflection Journal Template — Use the blank reflection space for observations; write the measurement units and setup separately.
Further reading
Read next
- Map directions work better with a shared viewpoint
- Three items at one price: make the receipt line explicit
- Measure a length with units that stay the same
Explore Money, measurement and data. Browse all teaching articles.