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Students estimate the height and length of various items around their school.

This practical task requires students to lift a 1 kg weight and then estimate whether a range of everyday objects weigh less than, about the same as, or more than 1 kilogram.

In this practical task, students decide which of four shapes have the same area, then use 100s blocks to check their answer.

In this practical task, students decide how many of four different shaped containers have the same capacity, then check by filling them with water.

Students use the Beaufort Scale, found on the Met Service website, to answer questions about wind speed.

Students enlarge shapes by whole number scale factors.

Students read temperatures on thermometers and identify where changes of temperature would be marked.

Students identify which square, from a selection of five, is the original square resized by a given scale factor.

From diagrams of four original and enlarged drawings to be used for Christmas wrapping paper, students identify the scale factor used and find a missing length on either the enlarged picture or the original picture.

Students enlarge shapes by specified increases in each dimension.

Students are provided with a diagram of a thermometer and they answer questions on its use, how it works, and then read the temperatures from four thermometers.

In this task students decide which people are estimating and which are not, and explain their reasoning.

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

This practical task requires you to estimate the dimensions of a room, then check with a metre ruler and calculate the volume of the room.

Using given information about a shop's takings students round the amounts to give estimated totals for four weeks takings.

Students estimate (and explain how) the area of two islands on a grid.

Students calculate increases in length, area, and volume, and relate this to the scale factor for an enlargement.

Students identify the centre of enlargement and the scale factor for an enlargement on a grid.

Task: Students read a pH scale to determine how it shows the increasing strength of an acid and a base solution and decide from different pH products what the effect would be on an acidic soil. Assessment focus: interpreting a pH scale.

Task: Using the given pH, classify 10 common substances as acidic, basic, or neutral. Assessment focus: knowledge of the pH scale

Students draw up a table to illustrate results of how indicators change when placed into four different liquids.

Students identify distances and mark positions on a treasure map with a scale.

Students answer two multiple-choice questions on pH.

From three different sized animal pictures and their enlargements, students are required to identify the scale factor and the length of an unknown side.

Students enlarge a shape on a grid and explore the relationship between scale factor and area.