# Durham Maths Mysteries

The Durham Maths Mysteries were written by Shirley Fall of Durham County Council as a resource to engage students in mathematics and promote discussion. The activities are based on cards with statements about the area of mathematics being covered. Students then have to use reasoning to decide how to tackle the task. Some of the mysteries have accompanying support materials and extension questions. Teachers' notes are provided as Download background here.

## Resources

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### Algebra Mystery

This resource written by Shirley Fall has thirteen cards each with a statement about algebraic expressions and how they lie on a 3 by 3 grid. The rationale is for students to discuss possible options and work towards a solution of which algebraic expression lies in each...

### Directed Numbers Mystery

This resource written by Shirley Fall has thirteen cards each with a statement about directed numbers and how they lie on a 3 by 3 grid. The rationale is for students to discuss possible options and work towards a solution of which directed number lies in each of the grid cells.

The file named Directed...

### Locus Mystery

This resource written by Shirley Fall focuses on constructing loci. There are eighteen cards with statements about an area of land centred on a four-sided field reputed once to have belonged to a notorious highwayman. Students are asked to discuss in groups and use the...

### Probability Mystery

This resource, written by Shirley Fall, has fourteen cards with statements about the likelihood of six different runners winning a race. Students are tasked with using the statements on the cards to determine who is most likely to win the race, with what probability, and in what sequence they would expect the...