Children can then move on to chemistry sets. There are chemistry sets for various age ranges. The Scientific Explorer's Mind Blowing Science Kit for Young Scientists is for ages 5-8 while the Science Wiz Chemistry Plus Experiment Kit is for children ages 8-15. Kids use test tubes, instruments that chemists use, mix various liquids and use manuals that teach about chemistry.
When it comes to chemistry there are also beautiful photo cards with images of chemical processes (for example, how water turns into ice or wapor, or how iron rusts) with information on the back of the cards. By the way, periodic table of the elements posters are great in the children's bedroom.
Related to chemistry, there are microscopes for kids. You can get either a low or high power microscope. With a low power microscope (magnifications ranging from 10x to 80x), kids can look at things like insects, fabric weaves, coins, etc. With a high power microscope (magnification up to 1000x), kids can look at pond water, bacteria or even blood cells!
Kids can start with playing electricity and physics toys from the age of 8. For beginners, there is the Thames and Kosmos Physics Workshop (ages 8 and above) in which kids build machines such as a windmill, a scale or a pendulum clock and experiment with levers, gears, pulleys, etc and learn about the basic laws of mechanical physics. For older children, there is the Thames and Kosmos Physics Pro, a best seller game which has also received many awards including the Parent’s Choice Silver Honor. It is Thames & Kosmos biggest and most advanced kit. Here the machines being built are even more impressive. For example, instead of levers, kids now build a hydraulic lift and other amazing machines and learn about more advanced topics in physics, such as energy, oscillation, fluid dynamics, hydraulics, etc.
Telescopes are great to have and many telescopes are relatively affordable. Once you and your kid have acquired enough knowledge on how to observe the night sky using a good astronomy book, you can use a telescope to do some stargazing. Looking at the stars and planets can be a fascinating experience for a child.