Lab
See the idea. Put it to the test.
956 practicals from Kindergarten to Year 12, in 9 subjects. A practical gives the idea, what you need, the steps, what you should see and a safety card. A teacher-led practical gives the idea and its hazards; its method is for tutors on the learning platform.
Review
Reviewed before publication (owner’s confirmation, 24 September 2026). That covers every practical here, and a practical’s page lists the sources its author read.
A safety card on every page
The risk, who supervises and the hazards. The 38 teacher-led practicals show their idea and hazards here; their materials, steps and sources, and any result, control or note that states a number or an amount, are for tutors and administrators on the learning platform.
School laboratory, not for home
207 practicals are medium or high risk. Each says so on its page: In a school laboratory, with a teacher supervising, under the school's risk assessment. Not for home.
Curriculum references
Each practical lists the NSW syllabus outcomes and Australian Curriculum v9 codes it supports. They are references, not a verified or complete curriculum alignment.
Find a practical
5 practicals
Mathematics 7–10 · Mathematics · Trigonometry
Pythagoras by measurement: squares on dotty paper and a 3-4-5 rope
The square on the hypotenuse has the same area as the two squares on the other sides, which can be counted on dotty paper and checked with a tape measure on a knotted rope that forms a right angle.
Practical, model not builtLow riskEnlargement on grid paper: lengths scale by k, areas by k squared
An enlargement from a centre multiplies every length by the scale factor and every area by the square of it, and counting squares on the enlarged figure shows the square.
PracticalLow riskHeight from shadows: similar triangles with a metre stick
At one moment the sun makes the same angle for every vertical object, so a metre stick and a tree with their shadows form similar triangles and the tree's height follows from one ratio.
PracticalLow riskHeight of a building with a clinometer: angle of elevation, distance and eye height
The tangent ratio turns a measured angle of elevation and a measured horizontal distance into a height that cannot be measured directly, and the error in the answer depends on how well the angle was read.
Practical, model not builtLow riskWhy the trigonometric ratios are constant: measuring similar right-angled triangles
Right-angled triangles that share one acute angle are similar, so the ratio opposite over adjacent is the same for all of them, and that shared number is the tangent of the angle.
Practical, model not builtLow risk
For tutors and administrators
The materials and steps of every teacher-led practical are on the learning platform, with the safety card first. Sign in with a tutor or administrator account to read them.