This resource begins with estimating by rounding to significant figures, then deals with estimations and predictions in real life scenarios. Fermi estimation is then introduced. The question ‘Is climate change happening?’ is also posed.

This lesson develops the concepts of:

• Finding perimeters, areas, and volumes using formulas.
• Finding relationships between perimeters, areas, and volumes of shapes after scaling.

There are three initial questions to consider that deal with:

• The perimeter of a circle...

This lesson develops the concepts of length and area. Particular attention is given to proving why two areas are or are not equal.

The lesson begins with three questions regarding area that students must classify as ‘sometimes, always, or never true’. An example is ‘if you join the midpoints of the opposite...

This resource develops the concept of substitution of integers, fractions, decimals, and directed numbers into inequality statements in order to test their validity. Students also represent inequalities algebraically and in words.

An initial question that students work on is representing the statement

This lesson develops concepts relating to radicals. In particular, students will enhance their understanding of:

• Use the properties of exponents, including rational exponents and manipulate algebraic statements involving radicals.
• Discriminate between equations and identities.
  In this...

This lesson develops the concept of reasoning about the properties of rational and irrational numbers. In particular, students will enhance their understanding of:

• Finding irrational and rational numbers to exemplify general statements.
• Reasoning with properties of rational and irrational...

This lesson develops the concept of reasoning about the properties of rational and irrational numbers. In particular, students will enhance their understanding of:

• Finding irrational and rational numbers to exemplify general statements.
• Reasoning with properties of rational and irrational...

This resource requires problem solving using skills in forming and factorising expressions.

Students investigate the sum of four consecutive numbers. Initially this is done using numerical examples. There are a series of statements for students to classify as ‘sometimes true’, ‘always true’, or ‘never true...

In this activity from ARKive students look for similarities between the basic body plan of different vertebrates as evidence of evolutionary change.

Please note that the ARKive.org website is no longer available, where links are listed for additional information within the Teachers' notes.The Teachers'...

In this activity from ARKive students observe images of different primates. The activity presents evidence for a common ancestor shared by different animal groups.

Please note that the ARKive.org website is no longer available, where links are listed for additional information within the Teachers' notes...

In this activity from ARKive students observe images and video material (with web access) of pale and dark forms of peppered moth. The activity uses the relative number of pale and dark forms in different environments as a model for evolution.

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In this lesson, students will be introduced to the advantages of big telescopes and the use of telescopes to do astronomy across the whole electromagnetic spectrum. They will then explore the transit method of detecting exoplanets (either practically, or using real astronomical data) and use mathematics to...

There are teacher notes and student materials which describe the research into the potential effects of climate change on a Coralline algae species. Curriculum links include biodiversity, sampling techniques, student t test, Simpson’s Index, photosynthesis, climate...