2

1

Keywords:

estimation

peer assessment

seconds

time

In this practical task, students work in pairs to estimate how much time they think has passed. One student estimates while the other times.

2

1

Keywords:

estimation

peer assessment

seconds

time

4

0

Keywords:

estimation

multiplication

Students show how they estimate in some multiplication problems and come up with sensible estimates.

4

1

Keywords:

discussion

estimation

multiplication

Students estimate a multiplication problem, share their methods, discuss the rounding method, and then do more estimation problems using rounding.

4

5

0

Keywords:

addition

estimation

money

multiplication

This practical task involves students making best estimates of sets of items and clearly demonstrating their method(s) of estimation.

4

0

Keywords:

estimation

multiplication

Students explain multiplication estimation methods used to solve word problems.

4

1

Keywords:

addition

estimation

Students to show how they estimate in some addition problems.

3

1

Keywords:

addition

estimation

This task requires students to estimate some addition problems using any appropriate method.

3

0

Keywords:

addition

estimation

money

multiplication

This practical task involves students making estimates of sets of items and demonstrating their method(s) of estimation.

4

2

Keywords:

discourse

division

estimation

Students estimate a division problem, share their methods, discuss the nice numbers and factors method, and then do more problems using nice numbers and factors.

4

2

Keywords:

addition

discussion

estimation

multiplication

Students estimate an addition problem, share their methods, discuss the averaging method, and then do more problems using averaging.

4

1

Keywords:

estimation

multiplication

Students discuss making an interval estimate in multiplication problems (i.e., getting a lower and an upper limit for the actual answer using the front-end and rounding-up estimation methods). They then use this method on two problems.

4

1

Keywords:

addition

discussion

estimation

Students estimate an addition problem, share their methods, discuss grouping nice numbers, and then do a problem using this method, then design a question showing how it uses the method.

4

1

Keywords:

addition

estimation

Students estimate an addition problem, share their methods, discuss the rounding method, and then do more problems using rounding.

3

2

Keywords:

estimation

length

repeated units

unitising

Students use a given height and diagram to estimate the height of four pictures of toy dolls.

3

4

Keywords:

estimation

length

repeated units

unitising

Students use a given distance and diagram to estimate the distance four people swam underwater.

4

0

Keywords:

capacity

estimation

reading scales

In this practical task, students estimate the capacity of two different sized containers, then check their estimates with a measuring jug.

4

0

Keywords:

estimation

length

practical

reading scales

In this practical task, students estimate the length of two common classroom objects, then check their estimates with a ruler.

2

2

Keywords:

estimation

mass

measuring

non standard units

practical

units of measurement

weight

In this practical task, students estimate, and then measure, the weight of two objects using a number of multi-link cubes, a balance scale and weights.

3

1

Keywords:

estimation

practical

reading scales

weight

In this practical task, students estimate, then measure, the weight of two bags using kitchen scales.

3

2

Keywords:

estimation

length

reading scales

In this practical task, students estimate, then measure, the length of two objects using a ruler.

3

2

Keywords:

estimation

temperature

In this practical task, students estimate and then measure temperatures.

2

4

Keywords:

capacity

estimation

measuring

non standard units

practical

units of measurement

In this practical task, students first estimate, then measure, how many 500ml jars it takes to fill a 1 litre and a 3 litre container

4

1

Keywords:

estimation

length

volume

This practical task requires students to construct a one metre newspaper roll, use it to estimate the dimensions of a room, then calculate the volume of that room.

2

0

Keywords:

2-dimensional shapes

area

estimation

In this practical task students use a grid squares overlay to estimate the area of six shapes by counting the number of squares each shape covers.

4

0

Keywords:

addition

estimation

journalling

Students write down an explanation of how the front-end estimation strategy works in addition problems to give information on their understanding of the strategy.