Enyoy doing mathematics with every bus number you see.
Each time a bus comes into view write down the following about the bus number:
Double it, halve it, square it
The challenge is to do all of this before the next bus appears!
Player 1 doubles the bus number.
Whoever gets the largest total wins.
Play the game with a friend.
Each time a bus comes into view the teacher gives an instruction such as:
"Write down the fifth multiple of this bus number."
Keep a running total of the bus numbers in your head!
Stand up as soon as the total exceeds 100 or is equal to a square number.
Do it in silence or chant the totals together.
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|Double||Factors||Sum of Factors||Winner|
|2||4||1 2||3||Player 1|
|3||6||1 3||4||Player 1|
|4||8||1 2 4||7||Player 1|
|5||10||1 5||6||Player 1|
|6||12||1 2 3 6||12||Draw|
|7||14||1 7||8||Player 1|
|8||16||1 2 4 8||15||Player 1|
|9||18||1 3 9||13||Player 1|
|10||20||1 2 5 10||18||Player 1|
|11||22||1 11||12||Player 1|
|12||24||1 2 3 4 6 12||28||Player 2|
|13||26||1 13||14||Player 1|
|14||28||1 2 7 14||24||Player 1|
|15||30||1 3 5 15||24||Player 1|
|16||32||1 2 4 8 16||31||Player 1|
|17||34||1 17||18||Player 1|
|18||36||1 2 3 6 9 18||39||Player 2|
|19||38||1 19||20||Player 1|
|20||40||1 2 4 5 10 20||42||Player 2|
|21||42||1 3 7 21||32||Player 1|
|22||44||1 2 11 22||36||Player 1|
|23||46||1 23||24||Player 1|
|24||48||1 2 3 4 6 8 12 24||60||Player 2|
|25||50||1 5 25||31||Player 1|
It is better to be Player 1! It is much easier to double a number than work out the factors and add them up and as you can see Player 1 is more likely to win.
Player 2 will only win when the bus number is an "abundant number". What is the next abundant number after 24?
Casio Classwiz Calculator
There is currently a lot of talk about this new calculator being the best in its price range for use in the Maths classroom. The new ClassWiz features a high-resolution display making it easier to view numerical formulas and symbols but it isn't a graphical calculator as such (it has the capacity to draw graphs on your smart phone or tablet, via a scannable QR code and an app).
As well as basic spreadsheet mode and an equation solving feature you also get the ability to solve quadratic, cubic or quartic polynomial inequalities and the answer is given just as it should be written down, using the correct inequality symbols!
This calculator has a high-performance processor and twice the memory of previous models ensuring speedy operation and superior computational power.more...
Teacher, do your students have
access to computers?
Here a concise URL for a version of this page without the comments.
Here is the URL which will take them to a student activity involving factors.