Investigate how you can work out what day of the week your birthday will be on next year, and the year after...
Label this plum tree graph to make it totally magic!
Find all the ways of placing the numbers 1 to 9 on a W shape, with
3 numbers on each leg, so that each set of 3 numbers has the same
Triangle ABC is an equilateral triangle and the
three lines marked with arrows in the diagram are parallel. If the
perpendicular distances between the parallel lines are 1 unit and 2
units then calculate the length of the sides of the triangle.
Suppose the distances between the parallel lines are a
units and b units then what is the length of the sides of