# Making and Testing Hypotheses - July 2008, All Stages

## Problems

### Logic Block Collections

##### Stage: 1 Challenge Level:

What do you think is the same about these two Logic Blocks? What others do you think go with them in the set?

### Shapes in the Alphabet

##### Stage: 1 Challenge Level:

In this problem, we're going to find sets of letter shapes that go together.

### Cubes Here and There

##### Stage: 2 Challenge Level:

How many shapes can you build from three red and two green cubes? Can you use what you've found out to predict the number for four red and two green?

### Tiling

##### Stage: 2 Challenge Level:

An investigation that gives you the opportunity to make and justify predictions.

### Reaction Timer

##### Stage: 3 Challenge Level:

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

### In the Bag

##### Stage: 3 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?

### Gr8 Coach

##### Stage: 3 Challenge Level:

Can you coach your rowing eight to win?

### Ishango Bone

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

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

### Snow and Cholera

##### Stage: 4 Challenge Level:

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 ?

### Counting Fish

##### Stage: 4 Challenge Level:

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

### Babylon Numbers

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

Can you make a hypothesis to explain these ancient numbers?

### Reaction Timer Timer

##### Stage: 5 Challenge Level:

How can you time the reaction timer?

### Least of All

##### Stage: 5 Challenge Level:

A point moves on a line segment. A function depends on the position of the point. Where do you expect the point to be for a minimum of this function to occur.

### Spot the Difference

##### Stage: 5 Short Challenge Level:

If you plot these graphs they may look the same, but are they?

### Pattern Recognition

##### Stage: 5 Challenge Level:

When does a pattern start to exhibit structure? Can you crack the code used by the computer?