Friday, September 24, 2010

A Thematic Integrated Science Lesson

My life of teaching practice at Happyland's pre-school;

Theme - The Living Earth
Unit Of Work - Plants in the environment
Lesson Topic - Parts of plants –function of the roots and stem
Learning Area- Language and Science
No.of children-
Duration - 90 minutes

Lesson Objectives:

At the end of the lesson, children would be able to:

1. A science experience –How the plants get water.
2. Have the skills of observing.
3. Develop an interest in early science.
4. Enchance their communication skills.

Straws;Food coloring(red),empty jar,sharp knife, cutting board; glass, water; a bunch of rose; carrots and a stalk of celery


Circle time (20 minutes)

1. Let children sit in a circle.
2. Recall the name of parts of plants and observe yesterday planting.
3. Ask children take out their water bottle.
4. Give them a straw and suck the water.
5. Ask question:
• How to you drink water just now?
• We need water. How about plants?
• How do plants drink water?

Activity 1
Roots and stem experiment (25 minutes)

1. Show children carrots, rose, and celery, sharp knife, cutting board; glass, water; red food coloring.
2. Demo how to do the experiment
• Fill a glass half full with water.
• Add red food coloring in water.
• Cut the end tip off of a carrot.
• Put the carrot in the glass of water.
• Put the glass near a window that lets in sunshine.
• Watch the carrot for a few days(or few hours).

Activity 2
A Stem Experiment
Rose and Celery

Leave the leaves and cut the stalk at an angle at the base. Put it in a glass with at least several inches of dark colored water and ask children to predict what will happen in writing with a short simple sentence. You might start noticing the colored water rising in a hour or two.
When all the students agree that the water is going up the stem have the students write descriptions of what happened. Have the students draw pictures of plants that label the roots, stems and leaves. Stems carry minerals up from the roots in the soil to the leaves on top.

What Is Happening

The rose- called capillary action. The flower sucks up the water through a tube called 'xylem'.

The carrot itself is really what we call a "taproot." This is a big and main root that grows straight down into the ground. Along its sides, little roots grow, too. Some trees, plants and bushes have a major taproot; others do not. Roots are really important! They hold a plant in place when it is windy. They keep soil around the plant. And most of all, roots conduct water from the soil up to the plant.

Activity 2 (30 minutes)

1. Gather in circle
2. Provide them with carrots,rose and celery.
3. Have children to do the experiment.
4. Have children to predict and guess the result.
5. After experiment clean up.

Activity 3 (10 minutes)

1. Have children watch a short video about plants need water.

Round-up (5minutes)

Share their experience of experiments.

Photosynthesis Video from Simple Science on Vimeo.

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