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Seeing that 3x and ÷ have just been done, it is easy to introduce thirds now. Give the learners loose paper shapes and allow them to fold and measure on their own, so that they can discover how it can be done. Some of the learners will know how to find sixths without any help. (Only enrichment)
The idea with the recipe is to make the learners understand that certain standard units and containers must be used, otherwise there is no chance of success with a recipe.
Let the learners mention more examples of the use of standard units in practice, e.g. petrol, milk, mixing medicines, prescriptions for administering medication, etc.
It is essential that all the different standard measuring containers and scales, as well as sand, water and objects used in measuring volume and mass , should be available in the classroom. Learners should be able to experiment every day with measuring and weighing, using standard units: litres and millilitres and grams and milligrams .
A bathroom scale is required to determine the mass of the learners.
Different methods are used for the multiplication and division calculations, but should you prefer another method and you find that the learners understand it better, it is their right to use the preferred method.
It is essential that many similar examples of the relevant number sentences be done orally before the learners are expected to complete this worksheet.
The regrouping of a hundred when adding or subtracting is now formally taught. Sufficient concrete work must be done beforehand. More advanced work where a ten and a hundred are regrouped simultaneously, should not be done at the same time. It will depend on the abilities of the group whether it should be done immediately hereafter or at a much later stage.
Whether the learners will be allowed to make use of carried numbers, remains the decision of the educator. e.g.
Learners will need a blank sheet of paper in order to calculate the shortest route. Some learners may find it difficult and may want to give up, but with a little help they should be able to do it.
A discussion on what they will see as they approach the farmstead by road is necessary before the learners will be able to draw it.
In order to measure accurately , we have to make use of standard units . Shorter lengths are measured in centimetres and millimetres . We can use a ruler to do this. 10mm = 1 cm
Longer lengths are measured in metres and for this we can use a metre stick, a tape measure or a trundle wheel. 100cm = 1 m
. metre | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
centimetre | 100 |
Object | Estimated | Measured | Too much or too little |
Object | Estimated | Measured | Too much or too little |
AD = _____________________________________________
AB = _____________________________________________
BC = _____________________________________________
CD = _____________________________________________
We discover: AD = BC and AB = CD
The two opposite sides of a rectangle are of the same length .
Thus : 2 times the length plus 2 times the width (breadth) is equal to the perimeter of the rectangle . ( 2 x l ) + ( 2 x b ) = perimeter
This is how we write it: 2 l + 2 b = perimeter
Now Bonny and Tommy know how to calculate what length of wire netting is needed to make the camp. They only have to calculate the perimeter of the camp.
_____ + _____ =
Granny baked 24 cookies. Bonny and Tommy ate ¼ of them.
How many cookies are left?
There are ________________________________________________
__________________________________________ spent more.
The difference is _______________________________________________________
He can cut ____________________________________________________________
Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.
Assessment Standard 1.4: We know this when the learner orders, describes and compares numbers;
Assessment Standard 1.11: We know this when the learner explains own solutions to problems;
Learning Outcome 4: The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.
Assessment 4.5: We know this when the learner estimates, measures, compares and orders three-dimensional objects using non-standard and standard measures.
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