1. Resources
Memory game trays X 5 with: sugar, water, leaf, potato, lightbulb, onion, soil (compost)
Printout of exam question

2. jeudi 23 mai 2019
Thursday, 23 May 2019
jueves, 23 de mayo de 2019
Efficiency
Level
Objective
Outcome
D/E
Describe how energy gets in and travels out of a food chain.
Draw a simple food chain and label where the energy goes in and comes out.
C/B
Explain why energy is lost at each trophic level
Explain how efficiency can be increased.
On your food chain include some numbers to show and explain exactly where the energy goes.
Complete exam questions
A/A*
Analyse the importance of decomposers in recycling nutrients in an ecosystem.
Calculate efficiency
Write a short paragraph explaining why decomposers such as fungus and bacteria are so important in a woodland ecosystem.
Sheet in question is the science equipment sheet .
Starter: Memory tray! How many of the items can you remember in 15 seconds?
Keywords: trophic level, consumer primary, carnivore, secondary, herbivore, detritivores
Extension: what links all of the memory tray items?

3. Where does it all start?

4. PRODUCERS

5. What is the word equation?
Boardworks KS3 Science 2008
Plants and Photosynthesis
What is the word equation?
Water, light, glucose, chlorophyll, carbon dioxide, oxygen

6. Primary Consumers
ENERGY

7. Secondary Consumer

8. ENERGY!

9. Why would I have more energy than the last example?

10. Your turn Draw a food chain for a woodland.
Explain where the energy enters and leaves the food chain
Why do you think little organisms such as worms and woodlice are important in your food chain?

11. 30% 100kJ Efficiency Movement = 55kJ Faeces = 10kJ Urine = 5kJ
If Angelina eats 100kJ of energy in the strawberry, how much of that (in%) does she use for respiration?
100kJ
Movement = 55kJ
Faeces = 10kJ
Urine = 5kJ

12. Calculating efficiency
Copy this equation into your books!
Efficiency =
(%)
Energy used
Energy eaten
X 100
33kJ
How much energy is used
For respiration? 33
100
X 100
= 33%

15. 800

16. 8

17. Exam question

18. Activity
4 square.

19. Decomposers
DETRITIVORES
FUNGUS
BACTERIA

20. Plenary II – if this is the answer, what is the question.
The Sun
Studnets are shown an answer and have to write down what question they think gave that answer. ‘Borrowed’ from Mock the Week’!

21. Plenary II – if this is the answer, what is the question.
Where does the
energy come from
in photosynthesis?

22. Plenary II – if this is the answer, what is the question.
Sex

23. Plenary II – if this is the answer, what is the question.
How might an
animal use some
of the energy it gains
from its food?

24. Plenary II – if this is the answer, what is the question.
100

25. Plenary II – if this is the answer, what is the question.
What is the total
possible energy
efficiency
of an animal

26. Plenary III – Guess the word!
Write a keyword on your post-it-note and stick it to your partners head without them reading it. They can ask you questions to guess the word!

27. Keyword SPLAT! WEB CARNIVORE PRODUCER ENERGY SUN PLANTS TERTIARY
TROPHIC
HERBIVORE
PRIMARY
CHAIN
SECONDARY

28. Efficiency Plenary: choose from one of the following 3!
jeudi 23 mai 2019
Thursday, 23 May 2019
jueves, 23 de mayo de 2019
Efficiency
Level
Objective
Outcome
D/E
Describe how energy gets in and travels out of a food chain.
Draw a simple food chain and label where the energy goes in and comes out.
C/B
Explain why energy is lost at each trophic level
Calculate efficiency
On your food chain include some numbers to show and explain exactly where the energy goes.
Complete exam questions
A/A*
Analyse the importance of decomposers in recycling nutrients in an ecosystem.
Write a short paragraph explaining why decomposers such as fungus and bacteria are so important in a woodland ecosystem.
Sheet in question is the science equipment sheet .
Plenary: choose from one of the following 3!
Keywords: trophic level, consumer primary, carnivore, secondary, herbivore, detritivores
Next lesson: Carbon and nitrogen cycles!