STATION 3: AN INTERESTING CONCONCTION (15 minutes)

STATION 1: THE SIZE OF MY FOOD PLOT (15 minutes)

TASK : Carry out the activity to see to estimate the area of an leaf. Materials / Apparatus Leaf

Graph paper

Glue

Scissors

Procedure 1. Place a leaf on a piece of graph paper.

1. Draw an outline of the shape of the leaf.

2. Cut and paste the graph paper on the answer sheet.

3. Count the number of 1cm x 1cm squares covered by the leaf. *

* The estimated area is the number of 1 cm x 1 cm squares.Questions

1. Is this a good way to estimate the area of a leaf?

2. Give a reason for your answer.STATION 2: MY TASTE ORGAN (15 minutes)

TASK : Carry out the activity to see to identify different areas of taste on a tongue.

Materials / Apparatus Solution A, B, C and D

Distilled water

4 droppers

Cup

Procedure 1. Rinse your mouth with the clean water.

2. Put 2 drops of solution A on your tongue with a dropper.

3. Record the taste you get in the table below.

4. Repeat steps 2 and 3 for solutions B, C and D.

5. Record your observation.

Questions 1. Why do you have to rinse your mouth with distilled water?

2. Give an example of the food which tastes like each of the solutions.

3. Why is it that when your nose is blocked, it is difficult to taste your food?STATION 3: SINGLE ME OUT! (15 minutes)

TASK : Carry out the activity to separate the components of a mixture.

Materials / Apparatus Beaker (250 ml)

Spatula

Glass rod

Filter funnel

Petri dishes

Retort stand and clamp Substance X, Y , Z Bar magnet

Distilled waterProcedure :1. Observe the mixture of 3 substances X,Y and Z.

2. Carry out the experiment to separate the substances.

3. Identify the substances and describe the method that you have used for each separation. Questions: 1. How can you separate salt from the sea water?

2. Why do we boil water before drinking it? 3. Why is distilled water not suitable for our health?

STATION 4

TASK : Carry out the following activities to help Ali to find out the answer. Materials/Apparatus 2 milk cans with different sizes of hole labelled A and B

Stopwatch

A pail of water

Procedure 1 Hold your finger over the hole of can A .

2 Fill the can with water.

3 Time how long it takes for the water to run out and empty the can.

4 Record this time.

5 Repeat step 1 to 4 using can B.

Questions 1 List the variables you controlled in your test.

2 Draw up a data table to record your results.

3 Write a conclusion for your experiment.

STATION 5: AN INTERESTING CONCONCTION (15 minutes)

According to the Kinetic Theory of Matter, matter is made up of discrete particles which are atoms or molecules. Particles of matter are not visible by the naked eye but we can show that matter is made up of particles. The three states of matter are solid, liquid and gas.

TASK : Carry out the activity to see what happens. Materials / Apparatus Vinegar

Dishwashing liquid

Baking soda

Water

Plastic bottle

String

Metre rule

balloon

Beaker (250 ml)

Measuring cylinder (100 ml)

Measuring cylinder (10 ml)

Syringe

Glass rod

Spatula

Filter funnel

Procedure:1. Fill a beaker with 100 ml of water and 5 ml of dishwashing liquid.

2. Add 10 ml of vinegar and a spatula of baking soda to the water.

3. Stir the mixture. Record your observation.

4. Fill the plastic bottle with 50 ml vinegar.

5. Mix 1 spatula of baking soda with some water. Pour the solution into the plastic bottle.

6. Quickly put a balloon over the mouth of the bottle.

7. Measure and record the maximum circumference of your balloon.

Questions :1. What has happened?

2. What would you expect to see if more vinegar and baking soda is used?