What you will want to do is take a couple of different areas of science and write them down. For example, you could choose the following: earth science, weather, and plants. And then take each area and come up with 1-2 experiments for each.
We will take earth as our first example. You can take a 2 litre pop bottle and fill it half with water. Then mix in some soil and let the mixture settle out for 5-10 minutes. The kids will see pebbles settle first. Sand normally settles next. Silt comes next. Then some dirt particles will float very long periods. Organic things like leaves and bugs will usually float. The lesson is just a brief introduction into geology. Make sure you are paying attention to your kids’ reaction, especially if one of them really seems to enjoy learning about dirt.
Next, let’s take the weather. Something we all can learn from. Let’s look at why the grass is wet in the morning. Take a 2 litre bottle and cut the top off. Fill it about 2/3 with warm tap water. Feel the outside. Now add several ice cubes and stir until melted. Now check the outside of the bottle again. Notice any moisture (if not continue to add ice cubes). The water on the outside is really forming from air surrounding the bottle. The water is condensed from the atmosphere when the water temperature is cooler then the dewpoint of the air. Dewpoint is calculated from the relative humidity and temperature of the air and is most easily remembered as the temperature that water vapor changes state into a liquid. This is why we get dew on the grass during the night time.
The final experiment we will look at is easy to do. The kids will really enjoy this one. We are going to make a mold garden (on purpose). Take several pieces of bread and sprinkle with water. Leave the bread out for several hours (overnight works best). Put the bread into a 2 litre bottle and cap it. Place the bottle in a sunny stop for a couple of days. What you will see starting to grow is mold. Don’t open the bottom to avoid letting the mold spores out (can cause sickness). Penicillin was discovered by a very similar experiment back in the 1930’s. Make sure you share this fact with the kids.
Remember to have fun with the kids. They may surprise you at the last moment with their forgotten assignment but by being prepared you can turn it around.
Visit our website at http://familynightactivities.com/uncategorized/10-fun-science-projects for more fun science ideas and resources.
Get your FREE parents guide to science projects at http://www.24hourscienceprojects.com. We also have a list of fast and easy science project guides that can be done in a very short amount of time – many of which are easily adaptable for use with more than one child.