Into the Classroom
Into the classroom
Tasks for assessment lessons
You can find support materials for the three suggested classroom
tasks here. These include big-print versions of the tasks (useful for
whiteboards) and any software you need Choose the task you are using
from the lower left of the screen. Press "play" to have the task read
out.
Counting trees
This diagram shows some trees in a plantation.
The circles show old trees and the triangles show young trees.
Tom wants to know how many trees there are of each type, but says
it would take too long counting them all, one-by-one.
1. What method could he use to estimate the number of trees of
each type? Explain your method fully.
2. On your worksheet, use your method to estimate the number
of:
(a) Old trees
(b) Young trees
Security camera
A shop owner wants to prevent shoplifting.
He decides to install a security camera on the ceiling of his
shop.
The camera can turn right round through 360 degrees.
The shop owner places the camera at point P, in the corner of the
shop.
The plan shows ten people are standing in the shop.
Which people cannot be seen by the camera at P?
Where would be the best place to put the camera?
Cats and kittens
This poster claims that, in just 18 months, a female cat can have
2000 descendants.
Work out whether this number of descendants is realistic.
