Let’s make a change!
Teacher’s partner in class---- chalk
When we clean the blackboard after class, we found many chalks broken in many pieces, if we throw it away, it may be a pity ,so we want to find out how to make a change!
How to recycle chalk dost??
After we found some data ,we found chalk ash can’t to blend in to chalk, we need terra alba!
How long did the change take? A week! Where? on the balcony of the classroom
What we used: a paper cup, a oil soil(45 dollar) terra alba,
Steps:
1 make oil soil in to a roller, the length and the shape is a little bigger than chalk!
2 add 2/3 cup chalk dost and add1.5 spoon terra alba, add the water to 8 /10 and stir (!!!:don’t to slow, it will solidify)
2 add 2/3 cup chalk dost and add1.5 spoon terra alba, add the water to 8 /10 and stir (!!!:don’t to slow, it will solidify)
3 pure it in to a model, it must be full, and put it outside
inconvenient.
在我们学校的教室里都安装了白板，所以我们用马克笔。
哪一个比较环保呢：粉笔或是马克笔？