Sunday, November 14, 2010

Week14 - Plants

Virtual Experiment - Individual Task

The virtual experiment is from http://www.bbc.co.uk/schools/ks2bitesize/science/living_things/help_plants_grow/read1.shtml

Topic: Helping plants grow well

Introduction
Plants need air, light, warmth, water and nutrients to be healthy. If they are healthy, they can continue making their own food through photosynthesis. You can also know about the important parts of a plant - roots, leaves and the stem.

A healthy plant is upright with green leaves.
Illustration of a healthy plant with lots of green leaves 
A seed will not produce a plant at all if it is kept too cold. The seed needs warmth to germinate and start to grow into a healthy plant.
Illustration of a seed that has started to grow roots 
A plant that is kept in a dark place will grow tall and spindly in search of light and then become weak and die.
Illustration of a tall spindly plant with yellow leaves 
A plant that is not watered will have a weak stem and dried up leaves and will eventually die.
Illustration of plant bending over, some of the petals have dropped off

How the experiment works?
  • The roots of a plant take up water and nutrients from the soil. The roots also keep the plant steady and upright in the soil; they "anchor" the plant.
  • The stem carries water and nutrients to different parts of the plant.
  • The leaves use light from the sun, along with carbon dioxide from the air and water to make food for the plant. This process is called photosynthesis.
Illustration of a plant with the roots, stems and leaves labelled


Have a FUN with the game below:

">

What do students learn from the experiment.

From the experiment, students learn how to help plants grow well and what a plant needs to grow. Students can also observe the important parts of plant do such as stem, leaves and roots. Thus, the students will know that a plant needs air, light, warmth, water and nutrients to grow well and healthy.

The Concept Map






















Questions

Must Do...
What are the basic needs of plant to grow well?

Should Do...
Give three important parts of the plant?

Could Do...
How the glucose and energy produce?

Week13 - Solids and Liquids

Virtual Experiment

Group Work - Topic: Solids and liquids


The experiment is about a substance or solid change to liquids when heated with different temperature.
Heat melts a solid and turns it into a liquid. Cooling freezes a liquid into a solid. Different solids melt at different temperatures, some high some low. These are called their melting points. Heat can change solids into liquids or gases. When we cool something we take heat away from it. Cooling changes a gas into a liquid and a liquid into a solid.

What do students learn from the experiment.

From the experiment, students can learn what happen to the solid if heated with different temperature. Students also will learn which substance is the highest temperature when heated and when cooling with 0°C, the liquids will change back to become Solid.