Presentation is loading. Please wait.

Presentation is loading. Please wait.

STEM and Simple Circuits Levels 5 and 6

Similar presentations


Presentation on theme: "STEM and Simple Circuits Levels 5 and 6"— Presentation transcript:

1 STEM and Simple Circuits Levels 5 and 6
Britt Gow STEM specialist teacher May 2017

2 What is STEM? A = Flying a drone? B = Testing a ramp? C = Building a bridge? D = All of the above?

3 What is STEM? The acronym stands for Science, Technology, Engineering and Mathematics, but it is more than the sum of its parts Not just a collection of content areas, but a transdisciplinary approach that provides authentic contexts for modern learning The focus is on developing skills such as collaboration, critical thinking, creativity, problem solving and effective communication

4 How many electronic devices have you been in contact with today?
A = None B = 1 to 3 C = 4 to 6 D = more than 6

5 Levels 5 and 6 Science understanding
Science as a human endeavour Scientific understandings, discoveries and inventions are used to inform personal and community decisions and to solve problems that directly affect people’s lives (VCSSU073) What are the social, economic and environmental impacts that electricity has made on society?

6 Levels 5 and 6 Science understanding
Physical sciences Light from a source forms shadows and can be absorbed, reflected and refracted (VCSSU080) Energy from a variety of sources can be used to generate electricity; electric circuits enable this energy to be transferred to another place and then to be transformed into another form of energy (VCSSU081)

7 Sources of energy Sunlight is the ultimate source of energy on earth
Fossil fuels (coal, oil and gas) are ‘trapped sunlight’ or chemical energy that is burned to create steam and turn turbines which produce electrical energy Some renewable energy (wind, hydro-electric, tidal and wave) turns kinetic into electrical. Solar energy turns sunlight into electrical energy.

8 Energy transformations
Kettles and toasters transform electrical energy into heat A hair dryer transforms electrical energy into heat, kinetic energy (movement) and sound Mobile telephones and TVs transform electrical energy into sound and light

9 Levels 5 and 6 Design and Technologies
Technologies and society Investigate how people in design and technology occupations address competing considerations, including sustainability, in the design of solutions for current and future use (VCDSTS033)

10 Levels 5 and 6 Design and Technologies
Technologies contexts Investigate how forces or electrical energy can control movement, sound or light in a designed product or system (VCDSTC034) Investigate characteristics and properties of a range of materials, systems, components, tools and equipment and evaluate the impact of their use (VCDSTC037)

11 Levels 5 and 6 Design and Technologies
Creating designed solutions Investigating Generating Producing Evaluating Planning and managing

12 Levels 5 and 6 Personal and Social Capabilities
Self awareness and management Recognition and expression of emotions Development of resilience Social awareness and management Relationships and diversity Collaboration

13 Simple circuits A simple circuit consists of
A power source (battery or mains) A load (LED, globe, motor or buzzer) Conductors (wires, metal strip) It may or may not contain a switch

14 Vocabulary Insulator – prevents the flow of electrons
Conductor – allows the flow of electrons Resistance – a measure of the insulating properties of a material Open circuit – does not allow electrons to flow back to the power source Closed circuit – a continuous loop that allows electrons to flow through the power source and the load.

15 Simple circuits – five weeks
Design and Technology, Science and Personal and Social Capabilities Squishy circuits Paper circuits Soft circuits Make a torch or lantern

16 Make the doughs Conductive dough Insulating dough 500 ml of water
250 g plain flour 150 g salt 6 Tb cream of tartar 2 Tb vegetable oil 1-3 drops of green food colouring 250 g plain flour 200 g sugar 6 Tb vegetable oil 240 ml distilled water Red food colouring Keep in an airtight container in the fridge as it can go mouldy

17

18

19 Mathematics - Measurement
Level 5 - Choose appropriate units of measurement for length, area, volume, capacity and mass Level 6 - Convert between common metric units of length, mass and capacity

20 Discussion about measurement
What is the mass of 500 ml of water? (1.0 ml = 1cm x 1cm x 1 cm = 1.0 g) What is the volume of 250 g flour and 200 g sugar? Discuss the difference between volume and capacity Density is mass per volume – sugar is more dense than flour

21

22 Squishy circuits Conductive dough Insulating dough
Power source (9V battery or similar) and conducting wires LEDs

23 Some tips to remember Don’t use a voltage higher than the LED rating
Remember that LED’s are like valves – they only work in one direction Wipe the wires clean after use, or they tend to corrode after being in contact with the playdough Store the playdough in an airtight container in the refrigerator as it can get mouldy

24 Paper circuits 3V coin battery Adhesive copper tape
Light emitting diodes (LEDs) Thin cardboard, and coloured pens or pencils

25

26

27

28 Some tips to remember Start with a simple circuit and one LED
Check your LEDs just with a coin battery before incorporation into the circuit Keep the copper strips smooth – any wrinkles can prevent the flow of electrons Corners can be tricky – make sure you have a copper to copper contact and not a copper and glue sandwich Tiny adhesive LEDs are available from Chibitronics Creating a working circuit requires patience and persistence

29 Soft circuits Felt 3V coin battery Conductive thread LEDs
Buttons, cotton thread, pipe-cleaners, press studs and other decorations

30

31

32

33 Where to buy? Shops Jaycar (MultiComm) Altronics stores Online
Chibitronics - Little Bird Electronics (Sydney) SparkFun (US) AliExpress (China)

34 Other Resources: Chibitronics website Makezine – LED pop-up cards
Makezine – LED pop-up cards Paper curiosities from MIT Tinkering at the Exploratorium

35 Make a torch or lantern Ask students to draw a cross-section of a torch and label the following parts: globe batteries switch conducting path Then ask students to describe the path of electrons.

36 Make a torch or lantern Encourage students to draw a plan of their torch and collect the materials that they have identified and labelled in their plan The ‘best’ torches have a switch that can be operated with one hand

37 Make a torch or lantern Provide the following materials to make a torch: cardboard tube batteries globe conducting wires paper clips, aluminium foil, drawing pins adhesive tape

38 How is it authentic wearable tech?
Clothing and accessories with integrated circuits FitBits, light-up shoes, GPS in AFL, smart watches Smart helmets that monitor heart-rate etc. Boxing gloves that track performance Backpacks with inbuilt solar panels LEDs and sensors on your fingernails

39 Questions? compton.leanne@edumail.vic.gov.au 9032 1698 Leanne Compton
Curriculum Manager, Technologies


Download ppt "STEM and Simple Circuits Levels 5 and 6"

Similar presentations


Ads by Google