Magic cups
Watch the video.
(This video was developed with Kristy from Minchinbury PS, Stephanie from Parramatta PS and Alishia from Sylvania Heights PS)
Transcript
Transcript coming soon.
Collect resources
You will need:
3 cups, or 3 of the same object (forks, spoons, markers or Lego blocks, etc.)
paper
3 different coloured markers, pens or pencils.
How to play
Set up your three cups (or forks, spoons, etc.) So they are orientated like this:
Notice how the middle cup is facing down and the two outside cups are facing up.
Your challenge is to flip pairs of cups, in exactly three moves, to have them all facing down.
Flip one pair of cups and record your move.
Flip a second pair of cups and record your move.
For the third time, flip a pair of cups and record your move!
Once you've found one way of flipping pairs of cups in exactly 3 moves, see if you can find another way!
Watch the next video to continue your thinking.
What to do next
Revise your recording by sharing your thinking in a table. You could use the ideas shared with you in the video.
Other ways to play
What does the starting position need to be to get the trick to work in exactly 4 moves using 4 cups? Or 5 cups in 5 moves?