Transcript Activities (1) - E

Premus
Colours and acidity
Rationale and Core Concepts
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We chose this activity because it is impressive and
interesting for children.
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Materials are easily available at home
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It can be adapted to various age groups
Active learning
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Colour
Acid/Base
Colour mixing (misconceptions)
Transportation of water in a plant
Expected Outcomes
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That the children will be able to understand how acids and
bases react with a variety of substances
That the children will understand that there are exceptions to
the rules of colour mixing
That the children will understand how water travels in a plant
and how it takes minerals and nutrients from the ground.
Target Group, Setting, Space and Time
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10-12 year olds
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Laboratory/ Home
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2 lessons
Activities (1)
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Activity 1 – Acidity and Baseness (Home)
The children and parents/guardians will boil a small amount of
red cabbage.
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They will drain the water into five separate transparent cups
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They will add vinegar to one of the cups and note the change
of colour.
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They will add baking soda to 3 of the other cups in varying
amounts (given by the teacher) creating the colours blue, yellow
and green.
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They will then mix the red solution with the yellow solution and
note the colour change
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Activities (2)
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Activity 2- Water Transport in a Plant (Classroom)
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The children will place water in the cups
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The children will place some different food colourings in the
cups
They will then place white flowers in the cups and wait about
two hours
The children will observe the change ( the flowers absorb
the water as always, but as it was colourful the flower will
show this colour change)
Activities (3)
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Activity 3- Discussion (Classroom)
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Vinegar/soda and acid/base
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Conceptions of colour change were questioned?
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Poppy vs. Corn flower
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Water transport
Materials
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Activity 1
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Red cabbage
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Five transparant cups
Vinegar
Baking soda
Activity 2
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White flowers
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Cups
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Water
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Food colouring
References
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Activity 1. Red Cabbage Indicator
chemistry.about.com/od/acidsbase1/a/red-cabbage-phindicator.html
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Activity 2. Flower Colouring
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O Lugar dos Amiguinhos
encontrodeamiguinhos.blogspot.gr
Famous Italian director