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What you need *Four eggs *A bowl *Some books *Sharp scissors(剪刀) *Tape(胶带) What you do ●Use the scissors to break a hole in the small end of each egg and make it larger to pour the eggs into the bowl.Give the eggs to your parents---they are used for cooking.Wash and air-dry the shells. ●Stick the tape around each egg's widest point;carefully break away shells between tape and hole. ●Put shells on the floor in a square and gently put a book on them.Add more books and see how strong the eggshells are. What has happened Eggshells are strong because they work the same way as an arch(拱门).Put weight on one place,and the curving(弯曲的) shell spreads the force all around the egg.The strong wall of the shell supports the weak point. ![]() |
E-books![]() |
Robot teachers![]() |
E-skates![]() |
Flying aids![]() |
What you need *Four eggs *A bowl *Some books *Sharp scissors(剪刀) *Tape(胶带) What you do ●Use the scissors to break a hole in the small end of each egg and make it larger to pour the eggs into the bowl.Give the eggs to your parents---they are used for cooking.Wash and air-dry the shells. ●Stick the tape around each egg's widest point;carefully break away shells between tape and hole. ●Put shells on the floor in a square and gently put a book on them.Add more books and see how strong the eggshells are. What has happened Eggshells are strong because they work the same way as an arch(拱门).Put weight on one place,and the curving(弯曲的) shell spreads the force all around the egg.The strong wall of the shell supports the weak point. ![]() |
An Experiment(实验) Report About Growing Potato Plants |
Things prepared: ?A potato that has sprouts(芽) ?A flower pot with soil ?A camera to record progress(进展) |
Day One The color of the soil looks darker because I have just watered it.In the center of the pot,I can see a tiny sprout that has grown from the potato under the soil.I will call it Buddy.Buddy is green and yellow. Day Six Without many changes in the past six days,I finally see some new progress on Buddy.It is exciting to see new life like this.I hope Buddy can grow faster. Day Eleven Buddy is getting larger.Three more new sprouts have grown around Buddy!Green leaves have grown on the new sprouts but they have not fully grown yet.I guess I need to be a bit more patient. Day Thirteen Buddy starts to grow taller.The leaves on the new sprouts have grown a bit.I'm excited to see the progress of the potato plants. Day Fifteen Finally,the leaves on the other sprouts are 3 cm tall.They are so green.I hope they will soon grow into new potatoes. |
fj@dyw.com
2017-11-16
初中英语 | 八年级上 | 任务型阅读