class a glass jar with a hard-boiled egg without the shell inside. Turn the jar upside down and ask students for solutions on how to remove the egg without breaking it. Holding upturned jar over a sink or large container, pour boiling water over the jar. This causes the air inside the jar to heat and expand, thus causing pressure pushing the egg out. Ask students how we get the egg back into the jar? Teacher places the egg in the mouth of the jar ensuring there are no gaps. Place the jar into a dish of boiling water. The air inside jar heats up. In order for the expanded air to escape is pulls (sucks) the egg into the bottle. Students to complete a written scientific procedure for this investigation in their SciTech journals. Lesson 4-5 – explore (research) Syllabus outcomes Teaching, learning and assessment Resources ST3-4WS ST3-14BE EN3-2A EN3-3A EN3-5B EN3-6B What are a solids, liquids and gases? Students use technology to research the scientific properties of a solid, liquid and gas. Record in SciTech journals. What are reversible and irreversible changes in matter (class discussion)? Class investigations (teacher directed). Burning paper (irreversible) – demonstrate and discuss how when paper is burnt it turns to ash and cannot be returned to its former state. Burning a candle (reversible) – demonstrate and discuss how when you burn a candle the wax turns into a liquid. However, it can be molded back into its original form. How does heat and cold affect metal? Student research how heat and cold affect metal and record findings in science journals. Watch heat and ball investigation () and have students write a scientific explanation as to why it worked. XOs candle, paper, lighter YouTube video on the effects of heat on metal –
Lesson 10-16 – elaborate (design) Syllabus outcomes Teaching, learning and assessment Resources ST3-4WS ST3-5WT ST3-14BE ST3-15I VAS3.1 EN3-1A MA3-9MG MA3-10MG MA3-16MG MA3-17MG Explain to students they will be using their existing knowledge and the knowledge they have gained throughout this unit to become ‘Design Engineers’. They have been hired to produce a scaled drawing and 3D model of a new and updated durable play equipment area for the students of The Grange Public School. Completed designs must include a breakdown of the costing of materials that will be required to complete their designs. Place students into groups (3-5 students per group). Teacher to outline the rules for group work, focusing on the importance of working collaboratively. Show and discuss with students the design brief and marking criteria. Direct students to the Kids Safe website (to be used by groups when considering design). This website outlines: the Australian Safety Standards for children’s playgrounds, potential hazards and points to consider when designing a playground. Groups will audit existing playground focusing on safety, durability and design features. Students make notes in SciTech journal on what needs to be updated, fixed or replaced. Allow opportunities for students to survey other students/teachers of the school to explore what the whole school community like and dislike about the existing play equipment. Teacher to encourage designs to include modifications so that, the play area can be used all year round (e.g. water cooling system, retractable shelter). Ensure students have access to internet technology, graph paper and a group scrap book. Students are responsible for keeping detailed notes of ideas, designs and websites. Student can also use Google Docs to communicate and share ideas with group members. Concepts to be covered in maths lessons during this time Measurement: length – measuring height and distance of existing equipment area – students will measure designated play space to determine the area. they will use this information to determine how much the ground cover they will require volume: depending on the selected ground cover material (eg. soft fall) students will use; concepts of volume will be explored. perimeter: students will measure the perimeter of the playground to add to the aesthetics of their designs eg edging, fencing. paper pencils tape measures design brief and marking rubric internet access for research graph paper scrap books paper various equipment for models drawing app