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Search every subject world, from Preschool to Grade 12. The first five courses of every subject path are free.

16 courses

Courses found

Science · Grade 6

Identify a Need and Constraints

Engineering starts with people, not gadgets. Learners observe and listen to users and stakeholders to find a genuine need, plan respectful user research with neutral questions, write solution-neutral problem statements with a sensible scope, and turn a client's wish list into a specification: firm constraints plus measurable criteria with target values, units and test methods. An optional Going further lesson adds factors of safety, shared budgets and breaking a large problem into sub-problems.

  • 5 lessons
  • About 110 min
  • Quiz: 10 questions
Free starter

Science · Grade 6

Research, Sketch and Model

Learners take a defined problem (a tablet stand for a school's video-call corner) from research to a modelled concept. They analyse existing solutions function by function and record sources honestly, generate many ideas before judging, select concepts by screening against constraints and comparing with a reference design, communicate with annotated sketches and orthographic views, convert between drawing and real lengths with scales, and choose physical, digital or mathematical models while stating their limits. An optional Going further lesson explores how areas and masses change when models are scaled, and counts concepts in a morphological chart.

  • 5 lessons
  • About 115 min
  • Quiz: 11 questions
Free starter

Science · Grade 6

Materials, Structures and Mechanisms

Learners equip a school's outdoor classroom. They choose materials by matching whole property profiles (strength, stiffness, density, toughness, durability, conductivity, cost) to requirements, using density data from a float simulation; explain tension, compression, triangulation, trusses and deep beams; and use levers, pulleys, wheels and axles and gears, calculating ideal mechanical advantage and the force-for-distance tradeoff. An optional Going further lesson calculates work, efficiency and compound gear ratios.

  • 5 lessons
  • About 120 min
  • Quiz: 11 questions
Free starter

Science · Grade 6

Energy, Controls and Simple Systems

Learners treat devices as systems. They trace energy chains through devices and separate useful outputs from energy that spreads to the surroundings; describe a school greenhouse's cooling system as inputs, processes and outputs with sensors, a controller, actuators and a power source; compare open-loop and closed-loop control and write and trace flowcharts; and use a circuit simulation to choose series or parallel arrangements for a lantern. An optional Going further lesson calculates power, energy budgets, battery run time and efficiency, and adds a switching band (hysteresis) to on/off control.

  • 5 lessons
  • About 115 min
  • Quiz: 10 questions
Free starter

Science · Grade 6

Prototype in Safe Virtual Environments

Learners choose prototypes of the right fidelity for each design question, then use two simulations as virtual prototypes: a ramp model to map a design space and find every setting that lands a toy car in a target zone, and a heat-transfer model to screen handle materials for a camping mug. They list what each simulation leaves out, separate questions a model can answer from those that need a physical test, and plan safe physical prototyping with a hazard–risk–control assessment. An optional Going further lesson calibrates a model against real measurements and contrasts interpolation with extrapolation.

  • 5 lessons
  • About 120 min
  • Quiz: 11 questions
Free starter

Science · Grade 6

Test, Measure and Iterate

A maker club's recycled-card shelf brackets keep failing, and learners use them to practise the testing half of engineering. They write test plans tied to specific requirements with pass thresholds and repeated trials, choose instruments with suitable resolution, summarise repeated measurements, handle odd results honestly, and use a sampling simulation to see why quality checks need large enough samples. They analyse failures with the 'five whys' to separate symptoms from root causes, then make data-driven iterations, one change at a time, and decide when to stop. An optional Going further lesson quantifies measurement uncertainty and compares designs whose results overlap.

  • 5 lessons
  • About 115 min
  • Quiz: 11 questions

Science · Grade 6

Accessibility, Sustainability and Tradeoffs

Good designs work for the full range of people who will use them and do as little harm as possible across their whole life. Learners apply universal-design principles and check accessibility with real users, trace a product's environmental impact through its life cycle, and weigh competing criteria with a weighted decision matrix and a sensitivity check. A Going further lesson compares options quantitatively with functional units, break-even points and payback times.

  • 4 lessons
  • About 115 min
  • Quiz: 10 questions

Science · Grade 6

Document and Demonstrate a Design

The final course turns a design project into evidence other people can trust and build on. Learners keep an honest engineering notebook, structure a design report that traces every requirement to a test and a result, present data clearly and truthfully, credit sources and teammates, and plan an accessible demonstration that invites critique. A Going further lesson adds a bill of materials, safety margins and a verification summary.

  • 5 lessons
  • About 115 min
  • Quiz: 10 questions

Science · Grade 7

Experimental Design and Data Quality

Learners turn observations into testable questions, hypotheses and predictions, then design fair tests with one independent variable, a measured dependent variable, controlled variables and a control group. They use simulations to see why repeated trials and larger, representative samples matter, summarise repeated measurements with mean, median and range, decide what to do with outliers, and judge data quality by separating accuracy from precision and spotting bias.

  • 5 lessons
  • About 115 min
  • Quiz: 10 questions
Free starter

Science · Grade 7

Chemical Reactions and Conservation

Learners identify substances by their characteristic properties, then use property data from before and after an interaction to decide whether a new substance formed. They build atoms into molecules, read simple formulas and count atoms, and explain a chemical reaction as the same atoms rearranging into new substances. They test conservation of mass in closed and open containers and balance a few very simple equations by counting atoms.

  • 5 lessons
  • About 115 min
  • Quiz: 11 questions
Free starter

Science · Grade 7

Energy in Systems and Reactions

Learners use data to describe how kinetic energy depends on mass and speed, and treat potential energy as energy stored by the arrangement of interacting objects, calculating gravitational potential energy as weight × height. They account for energy as it is transferred and converted, including the share that spreads into the surroundings. They then classify reactions and processes as exothermic or endothermic from temperature data and finish by evaluating hand-warmer and cold-pack prototypes against criteria and constraints.

  • 5 lessons
  • About 120 min
  • Quiz: 11 questions
Free starter

Science · Grade 7

Waves, Signals and Information

Learners describe waves by amplitude, wavelength, frequency and period, link amplitude to the energy a wave carries, and calculate with wave speed = frequency × wavelength. They compare mechanical waves, which need a medium, with electromagnetic waves, use a string simulation to connect frequency and pitch, and explain how materials reflect, absorb or transmit waves. The course ends with analog and digital signals and how many messages a code of bits can carry.

  • 5 lessons
  • About 120 min
  • Quiz: 12 questions
Free starter

Science · Grade 7

Organism Systems and Information Processing

Learners trace how information travels from sensory receptors along neurons to the brain or spinal cord and out to muscles, and compare fast automatic reflexes with slower voluntary responses that can change through memory and practice. They analyse reaction-time data from a ruler-drop investigation, explain homeostasis as negative feedback using body temperature, and use exercise data to argue that the respiratory, circulatory, muscular and nervous systems work together.

  • 5 lessons
  • About 115 min
  • Quiz: 11 questions
Free starter

Science · Grade 7

Reproduction, Heredity and Variation

Learners compare asexual reproduction, which copies one parent's genetic information, with sexual reproduction, which combines half from each parent and produces variation. They connect chromosomes, genes and alleles to dominant and recessive traits, use Punnett squares to predict offspring as fractions and percentages, and compare predictions with real counts. They then explain mutations and environmental effects as sources of variation, and use evidence to explain how animal behaviours and plant structures increase reproductive success.

  • 5 lessons
  • About 120 min
  • Quiz: 11 questions

Science · Grade 7

Ecosystems, Biodiversity and Change

Learners model how energy flows one way through an ecosystem while matter cycles, and use energy pyramids and the approximately 10% rule to calculate the energy available at each level. They describe biodiversity and the services ecosystems provide, use data and a predator–prey simulation to argue how disruptions ripple through populations, and evaluate competing solutions for protecting biodiversity against criteria, constraints and evidence.

  • 5 lessons
  • About 120 min
  • Quiz: 11 questions

Science · Grade 7

Earth Resources, Impacts and Engineering Choices

Learners explain why oil, coal, metal ores and groundwater are found in some places and not others, using the geologic processes that formed and concentrated them. They classify resources as renewable or non-renewable, compare rates of use with rates of replacement, and calculate total impact as per-person use × population. They then use weighted decision matrices to compare solutions and plan, monitor and improve a design that reduces a human impact.

  • 5 lessons
  • About 120 min
  • Quiz: 11 questions