This document outlines a unit plan for a Natural Science class focusing on ecosystems. The unit will examine key concepts around ecosystems like nutrition levels, trophic chains, energy and matter transfer, and biotic relations. Students will develop skills in areas like communication, collaboration, organization, reflection, information literacy, critical thinking, and transferring skills across disciplines. The unit will assess students through projects, tests, essays and activities focusing on objectives related to ecosystems. It aims to develop learner profiles like being inquisitive, knowledgeable, thoughtful, communicative and reflective.

1. Natural Science 2º ESO

3. Perfect systems
 Key concept

4. Perfect systems
 Related concept(s)

5. Global contexts

6. Statement of inquiry
The different ways of interaction and reproduction in living
beings determine their role in an ecosystem.
 What elements form an ecosystem?
 What are the levels in which we organize living beings according to their
nutrition?
 What tools do we use to study ecosystems?
 How do food relations between living beings in an ecosystem affect their
relations?
 How do living beings in an ecosystem connected to each other?
 Human actions affect ecosystems, are this changes irreversible?

7. What important concepts are we
going to study in this unit?
 Ecosystems: basic
concepts
 Nutrition in ecosystems
 Trophic chains and
networks
 Trophic pyramids
 Transfer of matter and
energy
7
 Biotic relations
 Biomes

8. What skills are we going to use in
this unit?

9. What skills are we going to use in
this unit?
Communication
I. Communication skills
How can students communicate through interaction?
How can students demonstrate communication through language?
Social
II. Collaboration skills
How can students collaborate?
Self-management
III. Organization skills
How can students demonstrate organization skills?
IV. Affective skills
How can students manage their own state of mind?
V. Reflection skills
How can students be reflective?
Research
VI. Information literacy skills
How can students demonstrate information literacy?
VII. Media literacy skills
How can students demonstrate media literacy?
Thinking
VIII. Critical-thinking skills
How can students think critically?
IX. Creative-thinking skills
How can students be creative?
X. Transfer skills
How can students transfer skills and knowledge across disciplines and subject groups?

10. Assessment tasks for the unit
OBJETIVES TASK
CRITERION
A B C D
Research the amount of paper
used every year and the impact of
this consume on ecosystems
worldwide.
Project “Save paper, Save trees”
x x x
Learn the basics about ecosystems
and biomes
Test Ecosystems and biomes x x
Draw a trophic pyramid using data
provided
“Trophic dynamics” x x
Reflect on the importance of zoos
as ways of preserving biodiversity
Essay Zoos and biodiversity x x
Use your previous knowledge to
answer basic cuestions on
ecosystems
Activities Ecosystems x x x
Outline of a scientific research Science Fair project x x

11. What characteristics of the IB learner
profile could we develop in this unit?
 Inquirers
 Knowledgeable
 Thinkers
 Communicators
 Principled
 Open-minded
 Caring
 Risk-takers
 Balanced
 Reflective