Compound measures

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Compound measures

Calculating Speed, Distance and Time

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

Distance Vs Time Graphs

Students learn how to plot and interpret distance vs. time graphs by examining the rate at which distance change...

Speed Vs Time Graphs

Students learn how to plot and interpret speed vs. time graphs.  By considering the direction of the graph stude...

Speed as a Compound Measure

Students learn how to calculate speed as a compound measure of distance and time.  As learning progresses studen...

Pressure

Students learn how to calculate the pressure of an object at rest as a compound measure of force and area.  As l...

Density

Students learn how to calculate the density of 3D solids as a compound measure of volume and mass.  As learning ...

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 […]