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problem
Plane 1 contains points A, B and C and plane 2 contains points A
and B. Find all the points on plane 2 such that the two planes are
perpendicular.
problem
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Gabriel's problem
Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?
problem
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Robot monsters
Use these head, body and leg pieces to make Robot Monsters which are different heights.
problem
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Frogs
How many moves does it take to swap over some red and blue frogs? Do you have a method?
problem
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Tug of war
Can you use the numbers on the dice to reach your end of the number line before your partner beats you?
problem
Power up
Show without recourse to any calculating aid that 7^{1/2} + 7^{1/3}
+ 7^{1/4} < 7 and 4^{1/2} + 4^{1/3} + 4^{1/4} > 4 . Sketch
the graph of f(x) = x^{1/2} + x^{1/3} + x^{1/4} -x
problem
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Got it
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.