Primary natural science

Students kit Heat

Investigating Temperature, Thermal Expansion, Evaporation and Condensation

Age: 7–9 years
Grade level: Grades 2–3
Materials: for 15 working groups of 2–3 students each
Use: Student experiments on temperature, thermometers, thermal expansion, evaporation, boiling and condensation in primary science lessons

With the Students kit Heat, students investigate fundamental phenomena related to heat and temperature through hands-on experiments. The materials allow 15 working groups to experiment simultaneously and are designed for primary science lessons in Grades 2 and 3.

One focus is on thermometers and temperature measurement. Students build a simple thermometer, observe the thermal expansion of liquids and initially develop their own temperature scale. They then learn about the Celsius scale and use ice and boiling water to determine important reference points.

Further experiments focus on evaporation, boiling and condensation. Students observe what happens when a liquid changes into a gaseous state, measure the cooling effect associated with evaporation and investigate different liquids. This provides an experimental introduction to fundamental processes of the water cycle.

A comprehensive teacher's guide supports lesson planning. Reproducible worksheets and picture stories encourage students to think about, describe and discuss their observations.

The picture shows a red suitcase equipped with various experimental materials, including test tubes, pipettes, containers and other laboratory equipment. The careful arrangement and the foam-protected interior suggest a d
The picture shows a red suitcase equipped with various experimental materials, including test tubes, pipettes, containers and other laboratory equipment. The careful arrangement and the foam-protected interior suggest a d
The picture shows a red toolbox filled with various experimental materials for educational purposes. It contains, among other things, sample tubes, glasses, pipettes and an overview card with the materials included.
The picture shows an experiment kit with various laboratory parts: grey cylinders and transparent glass containers are neatly arranged in a padded container. These materials are designed for use in education to provide practical
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The picture shows a selection of pipettes with red stoppers arranged in a foam insert of a type case. Also visible are two small, wrapped wax candles that could be part of the experimental supplies.
The picture shows a storage unit with various containers made of transparent plastic, including round lids and a funnel-shaped structure. These products are presumably designed for experimental applications in the educational field.
The picture shows a box with several transparent containers and a cleaning brush with a bristle brush and a softer end. In the background, other laboratory equipment used for educational experiments is visible.
The picture shows a teaching material entitled "Heat" from Cornelsen Experimenta, which focuses on experiments on the topic of heat. In the background, a thermometer is visible, showing different degrees of temperature.
The picture shows a layout plan printed in a manual. It shows various materials and their arrangement, presumably for use in experiments in the educational field.
The picture shows an experiment kit with a thermometer, a heater with a coil, a glass jar and instructions. These materials are intended for educational experiments and are intended to help students understand thermodynamics.
The picture shows an experiment kit with an instruction manual, a tripod, an Erlenmeyer flask, a pipette and a blue stopper. These materials are intended for educational experiments on heat.
The picture shows an experiment set with various materials, including a beaker, a metal holder, a candle and a glass tube. There is also a textbook with instructions for experiments on the topic of heat.
The picture shows two children sitting at an experiment station and working concentratedly with various laboratory equipment. A red-coloured liquid in an Erlenmeyer flask is rising in the foreground, while the children are holding a pipette and a measuring cylinder
The image shows a test tube filled with red liquid resting on a sturdy stand. Next to the tube is a burning tea candle while a hand holds the tube, depicting an educational experiment setup.
The picture shows a hand holding a container of ice over a beaker of water from which steam is rising. An electrically heated element is immersed in the water, which indicates an experimental setup to test heat conduction or transfer.
The picture shows two thermometers used to measure temperatures. One is a classic liquid thermometer with a scale from 0 to 100 °C, the other has a similar shape but with different measurement methods.

item number 31799

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Technical specifications

Size of kit: 540 x 450 x 150 mm

We will shortly provide you with a description of the experiment at this point.


The students should be able to describe the following observations based on their experiments: When the water in the flask was heated, it rose in the glass tube (it expanded); when it was cooled again, it sank (contracted) in the glass tube.


The students should get a feeling for different temperatures.


In the sense of the aforementioned learning objective, the students should be able to make an individual division of the scale and one that corresponds to the consensus of the group and thus be able to measure.


The students measure different temperatures in their environment.


The spirit in the beaker is shown and possibly passed around. The students should try to find out for themselves what the subject is.


The student groups receive the scaleless thermometers and two beakers with water at different temperatures. They take turns holding the thermometers in the glasses and observing them.


The students should be able to use ice and boiling water to mark the melting and boiling points of water on a thermometer without a scale.


We will shortly provide you with a description of the experiment at this point.


The students are asked to formulate a hypothesis about the behavior of a drop of cologne exposed to air.


The students should be able to name different non-potable liquids that are used in their environment.


The students should feel and measure the impression of cooling left by an evaporating liquid.


  • 1 × Thermometer model for demonstration
  • 15 × Dropping pipette, plastic
  • 1 ×
  • 1 × Plastic box, 105/90/50 mm
  • 1 ×
  • 1 × Funnel, PP, 75 mm
  • 1 × Immersion heater, 300 W
  • 4 ×
  • 15 ×
  • 1 × Coloring agent blue (food color)
  • 1 × Dye (food colouring), red
  • 15 × Graduated plastic beaker, 100 ml
  • 1 ×
  • 15 × Rubber stopper with 6 mm bore
  • 1 ×
  • 15 × Thermometer student type –5 to +100 °C
  • 1 × Test tube brush, 200/25 mm
  • 1 ×
  • 1 ×
  • 15 × Erlenmeyer flask, Duran 25 ml
  • 1 × Beaker, glass, 250 ml
  • 15 × Thermometer student type, without graduation
  • 1 × Storing diagram,int.vers.
  • 15 × Insulating block for plastic beaker
  • 15 ×
  • 15 ×
  • 20 ×
  • 15 ×
  • 15 ×
  • 15 ×
  • 16 ×