To play FDP Pelmathism (for Fractions, Decimals and Percentages), shuffle the cards and place them face down on a table, either in rows and columns or just spread out. Players take turns to turn over 2 cards. Whenever the cards match, the player keeps the pair and gets another chance to turn […]
Which coloured bits would you use to show that two eighths equals one quarter?
Which coloured bits would you use to show that two sixteenths equals one […]
Can you find a way to fold a sheet of paper so that you can cut out the tangram pieces accurately […]
Seven cylinders are full, seven are half-full and seven are empty.
A full cylinder weighs 50kg and an empty cylinder weighs 20kg.
How should they be loaded onto the lorries so that each lorry is carrying the same weight?
Click here to download […]
It is not difficult to put a list of decimals in order of size. But what about ordering fractions?
John Farey introduced sequences of sequences of fractions in order of size, now called Farey sequences. Can you discover his method from the following examples?
BUILD A FRACTION WALL
This wall is 1 unit wide. It shows one unit and two half units.
Click here to download the FRACTION WALL 30-minute lesson instructions and worksheet. Cut out the strips. Rearrange the order of the strips to build a wall with smaller and […]
Multiply the first number by 100. What do you get?
Subtract the smaller number from the bigger one. What do you get?
What does this tell you […]
The aim is to make square domino loops, like the one in the picture, from 4 dominoes matching the fractions, decimals and percentages. Start with any domino and find 2 other dominoes to match the ends of the first domino.
For example, the [3/10 and 10%] domino matches with 30% at […]
Hint: Think of factors!
Click here for the EASY CALC worksheet.
Click for The EASY CALC Notes for Teachers
Click here for the EASY CALC poster.
How big is the smallest village for which this is true?
Can you describe the population of other villages for which this is true?
Click here to download the […]