Pancake Day

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Spatula
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Drag this handle to use the spatula to toss the pancakes.

Toss the pancakes until they are neatly stacked in order of size with the largest at the bottom. Drag the spatula between two pancakes to toss all of the pancakes above the spatula.

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This is Pancake Day level 1. You can also try:
Level 2 Level 3 Level 4 Level 5

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Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

Comment recorded on the 24 May 'Starter of the Day' page by Ruth Seward, Hagley Park Sports College:

"Find the starters wonderful; students enjoy them and often want to use the idea generated by the starter in other parts of the lesson. Keep up the good work"

Comment recorded on the 19 June 'Starter of the Day' page by Nikki Jordan, Braunton School, Devon:

"Excellent. Thank you very much for a fabulous set of starters. I use the 'weekenders' if the daily ones are not quite what I want. Brilliant and much appreciated."

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Spatula Spatula Spatula

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Instructions

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The objective is to stack all of the pancakes in order with the largest at the bottom and the smallest at the top. To do this drag the spatula down the page then insert it carefully between any two pancakes or below the bottom pancake. When you release your mouse button all of the pancakes above the spatula will be tossed, which in this case means they will be turned over so their order will be reversed. Continue the process until you have the ordered stack.

Level 1 - The 4 pancake puzzle.

Level 2 - The 5 pancake puzzle.

Level 3 - The 6 pancake puzzle.

Level 4 - The 7 pancake puzzle.

Level 5 - The 8 pancake puzzle.

Extension activity: Work out the smallest number of tosses required to order a stack of pancakes regardless of how much they are initially mixed up.

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Read more about Pancake Numbers in the excellent book Casebook of Mathematical Mysteries by Professor Ian Stewart