this month, Stage 3 & 4

July 2008

 

Problems

Why not send us your solutions?

problem Icon

In the Bag

Stage:3 Challenge Level:Challenge Level:1

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?

problem Icon

Reaction Timer

Stage:3 Challenge Level:Challenge Level:1

What are your reactions like and what affects them?

problem Icon

Ishango Bone

Stage:2, 3, 4 and 5 Short Challenge Level:Challenge Level:1

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

problem Icon

Babylon Numbers

Stage:3, 4 and 5 Challenge Level:Challenge Level:1

Can you make a hypothesis to explain these ancient numbers?

problem Icon

Counting Fish

Stage:4 Challenge Level:Challenge Level:1

I need a figure for the fish population in a lake, how does it help to catch and mark 40 fish ?

problem Icon

Snow and Cholera

Stage:4 Challenge Level:Challenge Level:1

What information helped medical pioneers decide on the cause of a disease ? Especially in a time before microscopes were as powerful as they are today ?

problem Icon

Lion Hunting

Stage:4 and 5 Challenge Level:Challenge Level:1

A killer lion is causing devastation. From the locations of its reported activity, can you work out where its lair is located?

problem Icon

Quads

Stage:4 and 5 Challenge Level:Challenge Level:2Challenge Level:2

The circumcentres of four triangles are joined to form a quadrilateral. What do you notice about this quadrilateral as the dynamic image changes? Can you prove your conjecture?