Grade 7 Science and Technology case studies
Grade 7 Science and Technology · Put your knowledge to work in context.
Grade 7 Science and Technology is a junior secondary school subject that introduces students to scientific inquiry, matter and materials, forces and energy, living systems, ecosystems, Earth and space, engineering design, and the relationship between science, technology, society, and the environment. It is aimed at learners around 12–13 years old who are building the observation, measurement, and reasoning skills that support later science study. The Grade 7 Science and Technology case studies are 5 cases and about 3,635 words.
1The Duckweed Fertiliser Trial
Priya has heard that liquid fertiliser makes pond plants "explode with growth", and she wants to test this for her science fair. She fills five identical 250 mL glass jars with 200 mL of pond water and adds ten duckweed plants to each.
674 words, about 3 min2Choosing a Wall Material for a Soup Container
A Year 7 class is designing a reusable "keep-warm" lunch container for a school competition. Each team may choose one wall material from the technician's data sheet.
702 words, about 4 min3Bicycle Braking Distances on a Wet Court
During a road-safety unit, students measure the braking distance of a bicycle on the school court, first when dry and again after the caretaker hoses it down. The same rider (mass 55 kg) uses the same bicycle (mass 12 kg), tyre pressure is checked before every run, and the brakes are adjusted before each session.
723 words, about 4 min4Is the Car Park Polluting the Creek?
A Year 7 class samples invertebrates at three points along an urban creek. Site A is 50 m upstream of the stormwater outflow from a new car park.
732 words, about 4 min5Paper Bridge: When the Rubric Picks the Worst Design
A Year 7 team must design a paper bridge for a class competition. The bridge must span a 300 mm gap, support 500 g at the centre, and be built only from 20 sheets of A4 paper and 1 m of tape within 30 minutes.
804 words, about 4 min