Intermediate Activity

Activity
The goals for this activity are to improve your multiplication speed on the lower numbers and become comfortable with multiplying larger numbers. Try to complete the multiplication table in the simulation. Easy peezy? Try using the clock. Record your times. Do you get faster each time you practice? Easy peezy, lemon squeezy? Try the advanced level.

Special thanks to the Physics Education Technology PhET Team

Arithmetic Workout
<flash>file=Arithmetic_rjk.swf

Having difficultly?

Step back to the beginner workout or choose your own workout.

Add your results to the data table below

Correct	Incorrect	Time (seconds)	Code name (only numbers)
9	1	42	1348

Multichoice Question

• Five groups of four is
  • 9
    • Incorrect, were you adding instead of multiplying. Try the question again.
  • 1
    • Incorrect, were you subtracting instead of multiplying. Try the question again.
  • 20
    • Absolutely correct!

Reflection

When you have filled in all the squares, check out the diagonal   line of numbers that runs from the × to the lower right corner of grid. Do you notice any patterns? Hopefully you noticed that the same numbers occur on each side of the diagonal. Think about why this happens and talk to your mates about it.

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