UNIT 3 ( LESSION 4 )

STRENGTH OF MAGNETS

1. Magnets differ in strength .

UNIT 3 ( LESSION 3 )

Materials attracted by magnets

1. Magnetic objects are attracted by magnets.
2. Non-magnetic objects are not attracted by magnets.

Magnetic objects
* One sen coin          * Thumbtack           * Iron nail                * Needle
* Steel spoon             * Clip                       * Spring                    * Screw

Non- magnetic objects
* Ten sen coin          * Copper wire           * Aluminium              * Silver ring
* Stone                     * Chalk                      * Glass                       * Plastic

UNIT 3 ( LESSION 2 )

Handling magnets

1. Incorrect ways of handling magnets:

• Heating a magnet
• Dropping a magnet
• Knocking a magnet

2. Heating , dropping and knocking a magnet will weaken a magnet.
3. Correct ways of handling magnets :    

• Hold the magnet firmly
• Keep magnets in the box
• Use metal to connect the ends of magnets

        

UNIT 3 MAGNETS ( LESSION 1 )

Magnets attract or repel each other
1. Magnets are of different sizes and shapes.

    Types of  magnets : a ) U - shaped
                                     b ) Horseshoe
                                     c ) Bar
                                     d ) Ring
                                     e ) Rod
                                     f  ) Circle

2. A magnet has a north pole( N ) and a south pole ( S ).
3. Magnets will repel each other if the poles are the same. Magnets will attract each other if the poles are  different.

UNIT 2 ( LESSION 3 )

Plants can be grouping in many ways

1. Plants can be grouped in many ways according to their similarities and differences in external features.

Grouping of plants

• Bark  ~ smooth , rough
• Fruit ~ presence , absence
• Flower ~ presence , absence
• Root ~ tap root , fibrous root
• Stem ~ soft stem , woody stem
• Leaves ~ colour , shape , size

UNIT 2 ( LESSION 2 )

Plants can be grouped according to their external features

1. Plants have similarities and also differences based on their external features.

 Grouping of plants

a ) Flower

• Flowering   = Rose , orchid , Hibiscus

• Non- flowering = Fern , Moss , Mushroom 

b ) Stem 

• Woody stem = Durian, Hibiscus , Mango

• Soft stem = Banana , Sunflower , Balsam  

UNIT 2 PLANTS ( LESSION 1 )

External features of plants

1. Plants can be recognised by their external features.
2. Differents plants have differents external features. These include type of stem, flowering or   non-flowering, type of leaf surface and shape of leaves.

Stem

• Woody stem =  Mango tree
• Soft stem = Banana plant

Flower

• Flowering = Paddy plant
• Non-flowering = Fern

Leaves

• Shiny and smooth = Banana plant
• Dull and rough = Pumpkin plant

Leaves

• Irregular = Fern
• Long leaves = Banana plant
• Oval leaves = Bougainvillea