Key Stage 3

Showing 17–32 of 150 results

Key Stage 3

Calculating Speed, Distance and Time

Using ratio notation students learn how to calculate the speed when given distance and time.  As learning progre...

Calculating the Hypotenuse in a right-angled triangle

Students learn about calculating the hypotenuse in a right-angled triangle using Pythagoras' Theorem.  Using Py...

Calculations with Fractions and Mixed Numbers

Students apply their learning with fractions and mixed numbers to solve a wide range of calculations with fracti...

Changing the Subject of a Formula

Students learn about changing the subject of a formula using the balance method.  As learning progresses they us...

Comparing Fractions with Different Denominators

Using a fraction wall and equivalent fractions students learn about comparing fractions with different denominat...

Comparing Positive and Negative Numbers

Students learn about comparing positive and negative numbers and calculating the difference between the two.  Th...

Comparing Stem and Leaf Diagrams

Students learn about comparing stem and leaf diagrams using the median average and range.  As students progress ...

Comparing the Probability of Events

Students learn about comparing the probability of events using fractions on a probability scale.At the start...

Comparing the size of numbers

Students learn about comparing the size of numbers using the place value table.  They use greater and less than ...

Composite Area of 2D Shapes

Students learn how to find the composite area of 2D shapes involving triangles, rectangles, trapezia and paralle...

Construct and Interpret Pie Charts

Students learn how to construct a pie chart from a frequency table.  As learning progresses they compare sets of...

Constructing Triangles using Compasses and Protractors

Students learn how about constructing triangles using compasses and protractors using SSS, SAS and ASA.  As lear...

Converting between fractions, decimals and percentages

>Using the place value table and equivalent fractions students learn about converting between fractions, deci...

Corresponding Angles in Parallel Lines

Year 8 mathematics lesson where students learn how to recognise and calculate corresponding angles in parallel l...

Creating a Sequence using Formulae

Students learn how about creating a sequence using formulae.  Students progress from using function machines to ...

Describing Number Patterns

Students learn describing number patterns on a term to term basis.  More able students tackle Fibonacci and geom...

Mr Mathematics Blog

Calculating the Volume of a Pyramid

When calculating the volume of a pyramid we can substitute the values of the length, width and perpendicular height into the formula V = 1/3 lwh.  In my experience this is often provided for the students with little explanation as to why a volume of a pyramid is exactly one third the volume of a […]

Solving 3D Problems using Trigonometry

When teaching solving 3D problems using trigonometry we begin the lesson with a recap of Pythagoras’ Theorem and the three trigonometric ratios.  We do this by matching the ratio and equations to the respective right-angled triangle.   Students are encouraged to work in pairs and to show the diagrams as part of the working out on […]

Rounding to a significant figure

When I teach rounding to a significant figure, I ask the class to discuss in pairs or small groups a definition for the word significant.  It is a word that all the students have heard before but not all are able to define. After 2 or 3 minutes of conversation I ask the students to […]