Rubrik: Primary school accessories

Experiments on wind power can be easily and impressively executed using this handy piece of equipment. It is equipped with safety sockets, blows cold air only and can be powered by the 12 V table-top battery.

• Dimensions: 175 x 145 x 75 mm 
• Operating voltage: 12 V / DC 
• Nominal power: 12 W 
• Weight: 395 g 

The air blower needs a power supply providing 12 V DC. This can be supplied by the small but strong and powerful rechargeable battery. It is equipped with safety sockets.

• Dimensions: 120 x 71 x 65 mm 
• Battery capacity: 1,2 Ah / 12 V 
• Weight: 714 g 

A suitable charger for the table-top battery is also available.

For experiments on buoyancy and sinking as well as properties of air, this clear plastic beaker is a useful additional device.

• Diameter: 95 mm 
• Height: 122 mm 
• Weight: 49 g 

To demonstrate the presence of starch in foods, a solution of iodine is used. If this is put into a bottle with a pipette dropper before the experiment, it is easier to add the right amount. The tip of the pipette and its rubber bulb are built into the lid of the bottle. The pipette bottle is supplied without any iodine solution.

• Diameter: 42 mm 
• Height: 78 mm 
• Contents: 50 ml 
   

The processes of heat flow and thermal expansion of air are much easier to observe if a dash of the non-toxic blue food dye is added to the water being used. A small plastic spoon is attached to the lid of the round jar to facilitate adding the right amount.

• Diameter: 22 mm 
• Height: 73 mm 
• Contents: 10 g 
   

In order to investigate various types of soil, some sand is needed. Special play sand, also available from DIY shops, is particularly suitable for this. The sand is supplied in 5-litre buckets.

• Diameter: 225 mm 
• Height: 194 mm 
• Weight: 5 kg 

Aquarium gravel 

One of the types of soil to be investigated is gravel. In this case it is best to use aquarium gravel with a grain size of 2 to 4 mm. This is available from pet shops. The gravel is supplied in 5-kg bags.

• Dimensions: 34 x 24 x 4 cm 
• Weight: 5 kg 

Clay

Another type of soil which can be investigated using the PRIMARY SCHOOLS 3 experiment set is clay. It can be obtained from hobby shops in 10-kg packets.

• Dimensions: 32 x 14 x 12 cm 
• Weight: 10 kg 
   

100 circular filters packaged in a handy cardboard dispenser. 

• Diameter: 150 mm 
• Dimensions: 153 x 153 x 20 mm