Core Skills Analysis
Science
- Rhydan investigated whether sunlight could transfer enough heat into a homemade solar oven to melt a marshmallow and chocolate biscuit.
- Rhydan observed a gradual result over time: after approximately three hours in direct afternoon sunlight at about 29°C, the s’more was slightly melted.
- Rhydan compared two outcomes: the s’more partially melted, while the cracked egg did not cook successfully as the weather became cooler.
- The activity introduced variables that affect heating, including sunlight intensity, outdoor temperature, time, and the oven’s ability to trap heat.
Design and Technologies
- Rhydan designed and assembled a functional prototype using a shoe box, aluminium foil, cling wrap, and tape.
- The materials were selected for different purposes: foil to reflect or direct sunlight, cling wrap to cover the opening, and tape to hold the structure together.
- Rhydan tested the design with food, evaluated the result, and identified that the oven was not yet effective enough to cook an egg.
- The unsuccessful egg test provided useful design feedback and created an opportunity to improve insulation, sunlight exposure, or heat retention.
Mathematics
- Rhydan used elapsed time by checking the solar oven approximately once every hour and recording the outcome after three hours.
- Rhydan worked with an approximate temperature of 29°C and connected temperature conditions with the heating result.
- The experiment involved comparing measurable conditions and outcomes: the s’more was slightly melted, whereas the egg remained uncooked.
- Rhydan could represent the observations in a table or graph showing time outside, temperature, and the degree of food change.
English
- Rhydan’s activity can be communicated as a clear procedural report with sections for materials, method, observations, results, and conclusion.
- The observations support precise scientific vocabulary such as sunlight, heat, direct sunlight, temperature, melted, cooling, and unsuccessful.
- Rhydan practised explaining evidence rather than simply stating success or failure: the s’more was slightly melted after three hours, while the egg did not cook.
- The experiment provides a strong basis for reflective writing about what happened, why the results may have differed, and what could be changed in a second trial.
Tips
Tips: Help Rhydan turn the activity into a fair-test investigation by changing one factor at a time, such as the amount of foil, the type of covering, the angle toward the Sun, or the time of day. Create an observation table with hourly entries for temperature, appearance, and texture, then use the results to make a line graph or comparison chart. For a safe follow-up, test chocolate or marshmallows rather than raw egg, and discuss food-safety precautions before handling or tasting anything warmed outdoors. Finish with a short design review in which Rhydan sketches the original oven, labels its materials, and proposes one specific improvement supported by the observations.
Book Recommendations
- The Boy Who Harnessed the Wind (Young Readers Edition) by William Kamkwamba and Bryan Mealer: A true story about using observation, problem-solving, and available materials to develop a practical energy solution.
- Science Experiments You Can Eat by Vicki Cobb: An engaging collection of food-based investigations that encourages careful observation, prediction, and explanation.
- The Magic School Bus and the Climate Challenge by Joanna Cole: A lively introduction to sunlight, Earth’s atmosphere, climate, and the ways energy affects heating and cooling.
Learning Standards
- Australian Curriculum v9 Science Inquiry Skills — AC9S6I01, AC9S6I02, AC9S6I03 and AC9S6I07: Rhydan investigated a question, planned and conducted a hands-on test, observed conditions and outcomes, and can communicate findings using evidence.
- Australian Curriculum v9 Science Inquiry Skills — AC9S6I05 and AC9S6I06: The comparison between the partly melted s’more and the uncooked egg supports identifying patterns, considering changing conditions, and evaluating whether the evidence supports the investigation’s purpose.
- Australian Curriculum v9 Design and Technologies — AC9TDE6P01, AC9TDE6P02, AC9TDE6P03 and AC9TDE6P04: Rhydan identified a practical purpose, selected materials, produced a prototype, tested it, and evaluated how well the design worked.
- Australian Curriculum v9 Mathematics — AC9M6ST01 and AC9M6ST02: The activity can be extended through collecting, organising, representing, and interpreting data about time, temperature, and the degree of melting.
- Australian Curriculum v9 English — AC9E6LY06 and AC9E6LY07: Rhydan can develop an informative experiment report that sequences procedures, uses subject-specific vocabulary, and explains results with supporting observations.
Try This Next
- Create a results worksheet with columns for time, outdoor temperature, food appearance, texture, and conclusion.
- Draw and label the solar oven, identifying how the shoe box, aluminium foil, cling wrap, and tape each contributed to the design.
- Write three quiz questions: Why might foil help the oven? Why did cooling weather matter? What evidence showed that the s’more had changed?
- Design a second-version solar oven and annotate one improvement intended to trap more heat.
