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Wheat
and measurement - teacher notes
The
Wheat and Measurement activity can be use for both Primary and Secondary
levels. At Primary level it can be used to introduce Area, measuring
weights, place value, data collection and analysis. At Secondary
level can also be used in Maths/Science area to demonstrate ratios
and expressing large numbers in standard form. (refer to Extension
work)
Other
activities:
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Investigate
how number of grains in a kilogram of wheat compare to other
grains, for example rice. |
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Use
photograph as clues to list equipment used on a wheat farm. |
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What
other equipment would be needed? |
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Investigate
safety features of this equipment. |
Sample
solutions for student worksheets questions 2 - 5:
|
Estimate
of grains in 10cm square
|
Weight of grains in 10 cm square (g)
|
Number of grains in 10 cm square
|
|
Variety
of answers
|
Between
20g and 25g depending on density of grain |
Between
600 and 700 grains. Depending on size of wheat grain. |
For
question 6:
| 20g |
of
wheat equates to |
600 |
grains |
| (x5) |
|
(x5) |
|
| 100g
|
of
wheat equates to |
3000 |
grains |
| (x10)
|
|
(x10) |
|
| 1000g
|
of
wheat equates to |
30,000 |
grains |
| (1kg) |
|
|
|
Approximately 30,000 grains in 1kg of wheat (in standard form 3
x 10(squared) grains in 1kg of wheat)
Extension
work:
Based
on the work done in this activity, approximate how many grains the
28 tonne field bin could hold? (Note: 1000kg = 1 tonne)
| 1kg |
of
wheat equates to |
30,000 |
grains |
| (x1000) |
|
(x1000) |
|
| 1
tonne |
of
wheat equates to |
30,000,000 |
grains |
| (x28)
|
|
(x28) |
|
| 28
tonnes |
of
wheat equates to |
840,000,000 |
grains |
Approximately
eight hundred and forty million (840,000,000) grains in the 28 tonne
field bin. Written in standard form, approximately 8.4 x 10(to the
power of 8) grains in the 28 tonne field bin.
Resources:
Wheat
and Measurement activity based on "Wheat" and "Grain Harvest Equipment"
by Susan Jackson, Avalon books.
Other
titles in series include: Farms, Dairy Cows, Shearing Time, A Boom
Sprayer, A Sheepdog, Canola, Burning Stubble, Lambing Time, Weaning
Lambs and Clover Hay.
Cost:
$9.95 per book or $99.00 per set of 12 plus postage and handling
(min $6)
Interested ??…………………….. then contact:
Susan Jackson PO Box 98, St Arnaud Victoria, 3478
PH: (03) 5499 8269 - FAX: (03)5499 8210
E-mail: kensusanjackson@hotkey.net.au |
»
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to Wheat and Measurement - a student worksheet
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