Still part of the "4kids" series, "biology4kids" delivers concepts in biology in a language easy to understand by students at the end of elementary school. Unlike the other ones, this one starts with the scientific method, reasoning in science, experimental evidence, logical reasoning, deductive reasoning and inductive reasoning. This content is interesting, but it is a bit surprising to see it only in the biology unit.

The content of the biology website is very well layed-out with many pictures to enhance students understanding of the concepts. The content includes taxonomy, the kingdoms, labels and naming, relationship between organisms (commensalisms, competition, mutualism, parasitism, predator-prey), animal and plant cells, organelles, cell functions, osmosis, passive transport, active transport, mitosis, microorganisms, microscopes, prokaryotes, eukaryotes, fungus, photosynthesis, plant structure, invertebrates, arthropods, vertebrates, mammals, systems as well as some human anatomy and physiology. For each section, there is a quiz for student to check their understanding of the concepts. There is also a slideshow for some sections presenting many pictures with comments. A great introduction to biology!

"Physics4kids" is yet another website of the "4kids" family. It presents physics concept in a language that most students at the end of elementary school will be able to understand. There are quizzes throughout the website as the student get acquainted with the concepts to test their knowledge. The site presents the concept of motion including simple movements and complex movements, forces, acceleration, mass, lever, vectors, the three laws of motion, instantaneous velocity, transfer of energy and work. Even as an adult, if all of this is just a big nightmare of your past when you were in high school, you can relax and read through it. You will realize that it is not that bad.

Other topics covered include : thermodynamics (energy transfer, expansion, heat, temperatures, first and second laws of thermodynamics, enthalpy and entropy), optics (electromagnetic radiation, visible light, light structure, reflection, refraction, lenses and lasers), electricity and magnetism (charges, conductors, electric fields, magnetic fields, current, resistance, Faraday's law, Coulomb's law, magnet and AC/DC power) and modern physics (nuclear physics, quantum physics, radioactivity, fission, fusion and reactors).

"Cosmos4kids" is part of the same series than the site I presented yesterday : Chem4kids. It is a great introduction to space and astronomy with a language that most students at the end of elementary school should understand. The website design is appealing and subjects covered by this website include :the origins of the universe, gravity, the vacuum of space and electromagnetic radiations. The site also talks about galaxies and stars, including the Milky Way, constellations, black holes and clusters. Students will also get information about the solar system and all the planets that are part of it and other solar system details such as the solar wind, the heliosphere, the heliopause, the asteroid belt, asteroids, the Kuiper Belt, Comets and moons. There is also a technology component that includes spacecrafts, probes and satellites used to explore the universe.

Now this is chemistry made easy! "Chem4kids" presents many different chemistry concepts in a language that most students at the end of elementary school and beginning of high school will understand. It is great to present the three states of matter and the changes from one state to another. Students can also learn about mixtures and solutions, alloys and amalgams. They also discover how neutrons, protons and electrons form atoms that can be combined to form molecules. They are introduced to the periodic table of elements. It also talks about reactions, stoichiometry, thermodynamics, equilibrium, catalysts and inhibitors as well as acids and bases. There is also an introduction to biochemistry. It is certainly too simple for advanced chemistry course in high school, but it is great for younger students who have an interest in the subject.

No, we are not talking about a catalogue for magicians here, we are talking science. As you can see on this image, there seems that be imaginary black dots appearing randomly. This is an optical illusion. If you are teaching your students perception or just the five classical senses, this catalogue of optical illusions will be a success with your students as they will be amazed by what they see. The catalogue includes illusions in the following categories : Geometrical illusions, Lightness illusion, Color illusion and Anomalous motion illusion. Some classical optical illusions include : Müller-Lyer illusion, Ebbinghaus illusion, Zöllner illusion, Café Wall illusion, Fraser illusion and Poggendorff illusion.