Resources tagged with: Calculators

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There are 8 results

Broad Topics > Physical and Digital Manipulatives > Calculators

Triangle Incircle Iteration

Age 14 to 16
Challenge Level

Keep constructing triangles in the incircle of the previous triangle. What happens?

Number Pattern Explorations

Age 7 to 14
Challenge Level

Investigate what happens if we create number patterns using some simple rules.

Largest Product

Age 11 to 14
Challenge Level

Which set of numbers that add to 10 have the largest product?

Dating Made Easier

Age 14 to 16
Challenge Level

If a sum invested gains 10% each year how long before it has doubled its value?

Adding All Nine

Age 11 to 14
Challenge Level

Make a set of numbers that use all the digits from 1 to 9, once and once only. Add them up. The result is divisible by 9. Add each of the digits in the new number. What is their sum? Now try some. . . .

Adding with the Abacus

Age 5 to 16

Nowadays the calculator is very familiar to many of us. What did people do to save time working out more difficult problems before the calculator existed?

Decimal Time

Age 11 to 14
Challenge Level

Use the clocks to investigate French decimal time in this problem. Can you see how this time system worked?

Round and Round and Round

Age 11 to 14
Challenge Level

Where will the point stop after it has turned through 30 000 degrees? I took out my calculator and typed 30 000 ÷ 360. How did this help?