Simple science and a cool chemical reaction with this funhomemade bottle rocket! Kids and adults will have a blast with this easy-to-set-upSTEM project. Grab a few simple ingredients from the kitchen for amazing chemistry in action. This is one science demonstration you are going to want to...
STEP 1: Fill each water bottle equally with oil and water. STEP 2: Set out a large container or bin filled with water that is big enough to hold both the bottles and possibly a shark toy if you have one. If you want to get a little crafty, draw a shark face on the bottle. I ...
How much___the book___(cost)?I'd like___(be) a doctor because I want___(make)sick pepole better.sometimes people___(pollute)the air,the land,the river and the sea.We promise ___(pick) up rubbish.We tell people ___(reuse)shopping bags.Let's___(make)some e-birthday cards,...
1. Although children have little or no money of their own, they certainly have the capacity to be “givers”. As children often need so much help — even with everyday things, they might think that they are the only ones who should be helped. But you can let them know that everyone ...
It might not seem like much, but just 10 minutes of idling each day can add up to 1 to 2.5 gallons of wasted fuel every month. Cars with automatic stop-and-start systems or hybrids that use electric-only modes can cut down on this waste, making them a cost-saving option for drivers...
How Much Do Menstrual Cups Cost? On average, a reusable cup costs $20-$40 and lasts up to 10 years. That can make it quite a bit less expensive than tampons and pads, which can add up to as much as $150 a year. One catch is that you might need to try more than one kind of...
Air has no taste.But when the wind blows,You feel it on your face.Look at a kite,Or a plane in the air.How do they stay there?They ride on air.How does a balloonRise in the air,And lift people up?It uses hot air.We need air to breathe.We need air...
However, if you are looking for a full wrap on a larger truck with multiple layers, it could run you as much as $5,000. The only way to know for sure is to get an estimate from a reputable establishment for a particular wrap on a specific truck. Given the popularity of wraps, ...
Peak height:No one likes to bump their head when they sit up. Peak height, though, is measured at a single spot, so don't rely solely on this spec to assess overall headroom. The test pitch (noted above) is much better way to assess that. ...
The law also bans(禁止) waiters from encouraging people to order too much food. Some restaurants may use the “N-1” mode for people to order dishes. “N” stands for the number of persons at a table. So if there are six people at your table, you should order just five dishes, ...