5
10
15
20
a
34
57
80
103
b
2
4
8
16
c
25
50
100
200
d
31
28
31
30
e
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Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.
Casio Classwiz CalculatorThere 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 highresolution 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 highperformance 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 sequences self marking quiz.
Adapted from Wikipedia:
"Sequence dancing is a form of dance in which a pattern of movements is repeated. Sequence dancing may include dances of many different styles. The term may include ballroom dances which move round the floor as well as line, square and circle dances.
Sequence dancing in general is much older than modern ballroom dances. With the exception of the waltz, invented around 1800, all dances in ballrooms were sequence dances until the early 20th century. After modern ballroom dancing developed, in England, sequence dancing continued. It included socalled 'Old Time' dances and also adapted versions of the new ballroom dances, and then versions of Latin dances. Sequence dancing is a competitive sport as well as a social pastime."