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• Weight graph • • • • • RMs:a;

Z Choose paper to design a line graph
to show this information.
A section of it might look like this.
3 Between which ages did Jason's
weight increase:
a most quickly b most slowly?
Explain how you know from your graph.
4 Write three questions you could ask about your graph.
Write the answers in brackets alongside.
Use your graph to find out what weight Jason would probably
have been at these ages. Give answers to the nearest kilogram.
a 2 years b 4 years c 6 years d 8 years ~~
m e 10 years f 12 years g 14 years h 16 years ~ ..... '.:~
~ Explain why it makes sense to join the points on your graph.
[I], [gJ
CHALLENGE
Use reference books to find out if Jason's weight
at different ages was average for a boy.
Practical: designing an age/weight
graph to show given information.
rn

a x10 b 100 c x10 d x 100 e +10 a between 11 and 13 b between 5 and 7
f 100 g 10 h + 100 + 1000 j x 1000 The steepness of the slope of the graph.

10 times larger (purple 100 times larger (blue 1000 times larger (red Open: writing three questions which can be answered by the graph.
arrow) arrow) arrow)
~
1210 ~ 121 2q ~ o-2q 100300 ~ 100·3
121 ~ 12.1 100300 ~ 1003 a 13kg b 18kg c 23kg d 27kg
12· 1 ~ 1 ·21 130 ~ 1 ·3
e 33kg f 43kg g 53kg h 62kg
1003 ~ 100·3
Challenge
Open: writing statements about differently coloured numbers. Possible The ages marked on the horizontal axis are part of a continuous measure;
statements: they are not separate, discrete values.
The blue 6 is worth ten thousand times the purple 6. Challenge
The purple 6 is worth one thousandth of the green 6.
Use reference books to compare Jason's weight with that of an average
boy.