Algebra and Graphs
Exploring Expressions
Letters, in mathematics, always represent a number and in an expression (expressions don't have an "=" sign), these letters can be any number you want them to be! In this activity, you're going to replace...
Algebra and Graphs
Visual Line Equations Free
'Visualise equations of lines. Big counters, big boards, quick changes' In a quick glance around the classroom this activity will allow you to see why algebra can indeed describe lines: their slope (gradient)...
Algebra and Graphs
Equations of Lines
How do you define a line? It's important to differentiate the flight path of one plane, boat, missile etc. from another, if you don't, they may collide. Sketch 10 straight lines quickly on a piece of...
Number
Rounding: What For?
When thinking about rounding to the nearest one or two decimal places, it helps to think about money. Rounding to the nearest 10 cents/pence is the same as rounding to 1 decimal place e.g. is 0.23$ nearer...
Number
Standard Form: Investigation Free
If we look at the numbers in the picture on the left they can look confusing, but they are easier to interpret and understand than many very large and very small numbers: Saying numbers of this size...
Number
Recreating Ratios
The picture on the left was entitled “Happy Person” by its designer, and the two objects at the top of its head are called “SwimBoys”! The aim of this activity is for you to design suitable creations,...
Number
Prime and Powers Investigation
'Each of us has a unique DNA structure in every cell of our body. Prime Numbers are the DNA of the number system. Discover why, and solve the murder mystery . . . ' Why are "Prime" numbers "prime" i.e....
Number
Percentages of Amounts
"Some fun 2 player games that get you to practise finding percentages in your head" Remember "per cent" means "out of 100". The percentage sign is made up of the digits 1 0 0 rearranged into a fraction...
Number
Percentage Investments Free
Sometimes our intuition/gut feeling for numbers can lead us astray. What's the best way your parents could help to make your life easier? I'm sure you can think of many ways. . ! One way would be to invest...
Number
Investment Percentages Free
Investment 1Use "ZOOM" options in your internet browser if you can't see the whole applet (top of y-axes to the bottom) on one screen. Click on the "PLAY" button , BOTTOM LEFT, to start the animation...