the effects of waste materials on the environment

teacher notes


Links to other Areas – SACSA.

ARTS -

ENGLISH

SOCIETY AND EVNIRONMENT

DESIGN AND TECHNOLOGY

MATHEMATICS

What difference will this study make to a student’s life?

* Understanding the importance of science in everyday life.

* That applying logic to problems produces solutions.

* By making science fun and accessible we open a range of possible careers and develop a positive attitude to science.

* Through being non-judgemental (no ‘wrong’ answers, analysing and discussing results on their merits) and focussing an group problem solving and posing questions we promote the idea that science is accessible to all.

* Group cooperation and communication skills will be enhanced.

Lesson 2 & 4.
Working Scientifically –Process – Skills

* Formulate questions. (These needed to be supported and scaffolded so questions are ‘answerable’ by experiments.

* Conduct investigation using ‘fair testing’.

* Methodically collect data and rationally measure and document testing.

* Predict, hypothesise possible results.

* Evaluate findings.

* Critically examine findings, discuss issues and effects on community.

* Use critical thinking and reflective thought to discuss issues.

* Present and report information to a variety of audiences.

* Investigating, explaining and predicting events, and devising solutions in their everyday endeavours in their physical, social and biological worlds.

* Communicating scientifically to different audiences for a range of purposes.

* Using science to link with, and across, other Learning Areas, with lifelong learning, work and community contexts.

* Acknowledging that aspects of scientific thinking are carried out by all people as part of their everyday lives in ways that contribute to their personal and social wellbeing and identities in a range of contexts including cultural, environmental and economic.

* Appreciating the evolutionary nature of science and scientific knowledge as a human endeavour with iys own histories and ways of contributing to society.

* Positive attitudes, values and dispositions related to science, which involve: being open to new ideas, being intellectually honest and rigorous, showing commitment to scientific reasoning and striving for objectivity, and pursuing and respecting evidence to confirm or challenge current interpretations being confident and optimistic about their knowledge, skills and abilities to satisfy their own questions about the physical, biological and human-constructed worlds recognising and valuing diverse cultural perspectives in and through science thinking, planning and making decisions that include ethical considerations about the impact of the processes and products of science on people, future generations and environments.

Lesson 4 additional information for assessment
This was negotiable and students were given the opportunity of using music, dramatic depictions, poems, models or pictorial representations of the problem and possible solutions.

Lesson 2.
The emulsification test.

To determine the cleaning power of different common household cleaning agents.
Add a teaspoon of cooking oil and two teaspoons of cleaning agent to test tubes. (Make sure you label each tube with information about contents. Make a “control” using one teaspoon oil and two teaspoons of water).
Agitate (shake) the tube for one minute. – then let it stand for 5minutes.
Observe and record the results.

Lesson 4.
Germination Test.

Use dilute solutions of detergent 1:10, 1:250 and/or 1:2500 solutions. Also use one full strength solution plus a control of water.
Label clearly.
Place solutions into test tubes along with a teaspoon of seed.
Agitate (shake) for one minute, drain and place test tube on side. (Use plasticene or Blu Tak to rest tube.)

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