Έτοιμοι για δράση;
Σχετικό υλικό
Υλικό/Αρχεία προς μεταφόρτωση
Πόροι
Computer and large screen, template for ‘jumping animal’, rubber bands (no. 16)
Προετοιμασία
Make ‘jumping animal’ template/s out of cardboard
Στόχοι, μηνύματα, έννοιες
Συγεκεκριμένοι στόχοι
- Generate enthusiasm about the topic of the Learning Scenario.
- Gain a basic understanding of the term ‘energy’.
Συγκεκριμένα μηνύματα
- Energy is a measurable physical quantity that allows us to move, to move other things, and to change the shape, state, and even the temperature, of matter.
- The term ‘energy’ relates to a variety of familiar everyday ‘actions’.
- Without energy, no action can take place.
Βασικοί όροι
- energy
- work
- action
- energy conversion
- kinetic energy
- potential energy
Πρακτικές και Δεξιότητες
Πρακτικές STEM
- Δημιουργία και αξιοποίηση μοντέλων
- Διατύπωση ερωτημάτων και προσδιορισμός προβλημάτων
- Προετοιμασία και διεξαγωγή έρευνας
Προσωπικές δεξιότητες
-Δεξιότητες διαχείρισης
- Προσχεδιασμός
- Αξιοποίηση πόρων
Δράση
step 1
Show students a video of a Rube Goldberg machine and ask them to think about what the video is about.
step 2
Perform the following energy-intensive actions and ask students what they have in common?
- Throw a pen to a student
- Ask a student to jump on one leg
- Turn on a flashlight/light
step 3
To ascertain what they already know, students will think about what energy is and what types of energy exist. They will organise their answers by energy sources and types of energy. Afterwards, shoe students a presentation, newspapers, and relevant articles to engage them in the topic. Discuss:
- What is energy? (Capacity for doing work, total amount of energy neither increases nor decreases.)
- What do we need energy for?
- What can be done without energy?
step 4
This ‘jumping animal’ experiment is an activity which illustrates how energy conversions cause work (action) to take place. Students will build the model and analyse energy transitions through research and experimentation. They will fold the animal and stretch the rubber band, giving energy to the rubber band (like a spring). When the animal is placed on a surface, the stretched rubber band relaxes, releasing potential energy. As the potential energy transforms into kinetic energy, it causes the animal to jump (see video).