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Half-life with M&Ms
This test is an open lab on the half-life of radioactive elements, simulated with M&Ms. Students have to devise an experiment, carry it out and make a corresponding graph.
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Qualitative and quantitative analysis of hydrates: Practical
In this practical, it is quantitatively determined how many water molecules bind per salt molecule of a hydrate (for example that of copper sulphate). It is also qualitatively demonstrated that a hydrate has a different color than its …
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Amylase in saliva: Practical
In this practical, prepared according to OVUR, students investigate the function of amylase in saliva. They do this by adding their own saliva to a starch solution containing lugol. An additional research question is what influence an …
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Microscopy and chemical identification: Solve the mystery
During this lab, your students will investigate a crime. Three pieces of evidence were found at the scene of the crime. It's about animal hair, soil type and fibers. After a chemical and microscopic examination, the students can determine which …
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Microscopy: The Five Kingdom System
During this microscopy practical, students discover the criteria of the five-kingdom system. The students make a preparation of:
- waterweed,
- cheek epithelium,
- mold,
- cilia,
- bacteria.
The students compare the different cells and make a drawing of their …
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Drawing with SketchUp Free and SketchUp for Schools for 3D printing and laser cutting
Introduction to the free online programs SketchUp Free and SketchUp for Schools. Both programs can be used to create designs for 3D printing. In the 'for Schools' version, files for laser cutting can also be created. A school account from …
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Osmosis: Practical
A detailed practical to demonstrate osmosis.
For the complete implementation you need two lessons, including a report. The test is easy to carry out by the students, they do not need any hazardous substances.
Prerequisites: theory active and passive …
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Ohm's Law: Student test with simulation
With this document, the students can, by means of a simulation, find out for themselves Ohm's law and discover how the current and voltage change in a series and parallel connection. It also briefly illustrates the difference between a short …
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Fireworks sparklers: Lab
This is a description of an experiment to make fireworks sparklers during a bilingual education lesson for the subject Science. Within this chemical subject, students learn to weigh quantities, make a product with chemicals and make something …
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Water treatment: Chemical aspects
A detailed course on chemical aspects of water purification.
Among other things, the following are discussed:
- determination of total hardness of water,
- determination of chemical oxygen demand,
- qualitative, semi-quantitative determination of ions in …
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Redox reactions: Experiments with potassium permanganate
This student test fits within the theme of redox reactions in an acidic and alkaline environment . Different reactions of potassium permanganate are investigated in a nucleon dish.
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Running waves: Virtual practical
This is a lab via an applet that serves as an introduction to running waves. Students can do this assignment in pairs or individually, at home or in the classroom, in preparation for the course on running waves.
The following concepts are …
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