### There are 17 results

Broad Topics >

Using, Applying and Reasoning about Mathematics > Making and testing hypotheses

##### Age 11 to 14 Challenge Level:

A country has decided to have just two different coins, 3z and 5z
coins. Which totals can be made? Is there a largest total that
cannot be made? How do you know?

##### Age 11 to 14 Challenge Level:

Imagine you have a large supply of 3kg and 8kg weights. How many of each weight would you need for the average (mean) of the weights to be 6kg? What other averages could you have?

##### Age 11 to 14 Challenge Level:

Charlie and Abi put a counter on 42. They wondered if they could visit all the other numbers on their 1-100 board, moving the counter using just these two operations: x2 and -5. What do you think?

##### Age 11 to 14 Challenge Level:

Can you find rectangles where the value of the area is the same as the value of the perimeter?

##### Age 11 to 16 Challenge Level:

What's the largest volume of box you can make from a square of paper?

##### Age 14 to 16 Challenge Level:

Can you find the values at the vertices when you know the values on the edges?

##### Age 11 to 16 Challenge Level:

Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?

##### Age 7 to 18 Challenge Level:

This game challenges you to locate hidden triangles in The White
Box by firing rays and observing where the rays exit the Box.

##### Age 11 to 14 Challenge Level:

Can you guess the colours of the 10 marbles in the bag? Can you
develop an effective strategy for reaching 1000 points in the least
number of rounds?

##### Age 11 to 14 Challenge Level:

Can you coach your rowing eight to win?

##### Age 11 to 14 Challenge Level:

Imagine a machine with four coloured lights which respond to different rules. Can you find the smallest possible number which will make all four colours light up?

##### Age 7 to 18 Challenge Level:

Can you decode the mysterious markings on this ancient bone tool?

##### Age 11 to 18 Challenge Level:

Can you make a hypothesis to explain these ancient numbers?

##### Age 7 to 14 Challenge Level:

Many natural systems appear to be in equilibrium until suddenly a critical point is reached, setting up a mudslide or an avalanche or an earthquake. In this project, students will use a simple. . . .

##### Age 7 to 14 Challenge Level:

How does the time of dawn and dusk vary? What about the Moon, how does that change from night to night? Is the Sun always the same? Gather data to help you explore these questions.

##### Age 14 to 18

This article explores the process of making and testing hypotheses.

##### Age 11 to 14 Challenge Level:

This problem offers you two ways to test reactions - use them to
investigate your ideas about speeds of reaction.