Pressure is the amount of force that is exerted on something. Gravity causes pressure naturally. Water pressure is the force created by the weight of water. When you jump into a pool, you can feel the force pushing around you. Water pressure can push water through pipes and hoses. Here is an easy water pressure experiment….
Have you ever wondered where metals such as iron, copper or nickle come from? We can buy them from hardware store. But where did the store get them from? Do you need to be an iron ore miner to find them? Turns out a lot of metals can simply be found in soil. Try this simple…
In an analysis of 6 studies including more than 35,000 kindergarten-ready children, it was found that comprehension of the world was the strongest indicator of the kid’s future academic performance. Comprehension or general knowledge of the world is a very broad category, but it basically means common sense in daily lives. It is not surprising that…
Toddler’s fine motor skills is one of the strongest predictors of the child’s future academic achievement. Fine motor skill is the ability to control hands and fingers. They are needed for writing, playing with small toys, doing puzzles, cutting with scissors, tying shoelaces and more. At school, kids are expected to learn to write new…
Diffusion is the process of something moving from one place to another in a medium such as air or water. It’s a common process in everyday life. When mom is cooking pancake in the kitchen, you can smell it all the way upstairs in your bedroom. If you put a drop of water color into…
Shape Activity For Preschoolers This shape activity for preschoolers requires very simple materials. It is the perfect project for little kids. They can exercise their fine motor skills. They will also learn to visualize different 3 dimensional shapes. Note that this project requires a lot of eye-hand coordination. Recommend for children above 4 years old. These…
Silkworms are native in China. They spin cocoons of fine, strong and lustrous fiber which can be used to produce raw silk. Silkworms are domesticated insects which means they cannot survive in the wild by themselves. The practice of breeding silkworms for silk production has existed for at least 5,000 years in China. Silkworm…
Here is a simple physics experiment using a property called static electricity. Every object is made up of small particles called atoms. These particles are extremely small and you cannot see them without a microscope. There are two types of charges in every atom — positive change(s) and negative charge(s). Only negative charges are free…
What do you do when there is an oversupply of candies in the house, like the day after Halloween? (yeah, right.) Candy science experiment, of course! This experiment is really spectacular to watch, but the science behind is pretty complicated… actually, I haven’t found a definitive scientific explanation agreed by all authoritative scientists yet. But…
Surface tension is the glue that binds water into a cohesive sphere and the force that makes water bead up on a surface. It is one of the amazing properties of water. Surface tension in water is created by the attractive forces between the water molecules It can be broken up. In this experiment, we…
This is a fun and simple way to teach kids about light and the basics of how light works. Under sunlight, put a toy on a surface or a piece of paper. Then watch as the shadow is created on the paper, floor or wall. Light travels in a straight line (as far as our…
After finishing the Hovercraft and Friction experiment, you will be left with an empty CD case. Here is an upcycling idea. The empty CD box can be used in this gardening project. Grow a little indoor greenhouse full of grass in you kitchen. Like most plants, grass needs water, soil, air and sunlight to grow….
Can you make rain in your own home? This is a rain making experiment that simulates how rain forms. A simulation is an imitation. This experiment mimics the rain making process in nature, but it’s not the real process. We can then closely study it. Unlike other rain making experiment, this one is super simple….
3D drawing is a visual illusion trick kids will love to learn. In this project, we will be learning about the properties of depth perception. You will draw an object that looks like it’s jumping out of (or into) the 2D piece of paper. See how your eyes can perceive images differently when the picture…
Summer is more than half way through. Soon it’ll be fall and the change in seasons is usually accompanied by curious questions about the weather. Since autumn is often windy, one inevitable question is: Where does wind come from? This question has two meanings: a) how is wind created? and b) which direction does the wind…
Summer is here! Kids love bubbles. And they adore bubble science experiments. It’s one of their favorite summer activities. Playing with bubbles using a simple wand is fun, but here is another cool way to blow bubbles. They are called bubble snakes. Bubble snakes are easy to make and provide tons of outdoor entertainment. Take…
Do grapes sink or float? Grapes can do both. Whether a grape sinks or floats depends on its density relative to the water it’s in. An object’s buoyancy is determined by its density compared with the density of the surrounding water. Density of water can be changed by adding salt. Let’s try this experiment to…
Normally, paper clips do not fly into a hand that hovers over them. That is because the gravitational force pulls the paper clips toward the Earth. In the experiment, you will use a strong magnet to make the paper clips come upward into your hands. It’s almost like the paper clips can defy gravity. But…
What do bottled water and cloud have in common? They both involve a process called evaporation. Evaporation is an important step in the water cycle. Warm water evaporates and turns into vapor. In bottled water factories, water is boiled and vapors are collected to make the product. In nature, drops of vapor gather to form clouds…
Can water defy gravity and float in midair? Not really, but with some help, it can appear to be. Air molecules, which we cannot see with naked eyes, are constantly moving and bombarding everywhere. The resulting force is air pressure. Normally, the air pressure above and below the water are the same. When equal forces…