This document provides instructions for an experiment to observe how plants drink water. Students will place white roses in cups of colored water to see how the water travels up the stem. The objectives are to understand what plants need to grow healthily and learn that plants require water. By observing the roses over time, students can see that flowers drink water through capillary action as it moves up narrow tubes in the stem.

2. Unit: Plants
Topic: How plants drink water
Matthayomsuksa 1

3. Objec
tive
1. To know how to conduct an experiment, observe
closely what is happening and keep appropriate records.
2. To understand what plants require
grow and staying healthy?
3. To learn that
plants need water
to stay healthy.

4. -

5. What do
you see in
the video?

6. How do
plants drink?

7. Vocabul
ary

8. ste
m

9. flow
er

10. roo
t

11. Activity

12. You will
need

13. 3 white
roses

14. Red and
blue food
coloring

15. 4
containe
rs
holding
water

16. Steps of Experiment
1. Give each group an
experimental recording sheet.

18. 2. Put the plastic cup on the table.
3. Pour the water mixing the coloring
food into the 4 plastic cups: each of
plastic cups will have colored water.
The first 2 plastic cups will have blue
water. The other 2 plastic cups will
have red water.

19. 4. Put a rose into a plastic cup
containing water mentioned earlier.
5. - The first rose will be in blue water.
- The second one will be in red water.
- And the last one will be in both blue
and red water.

21. Conclusion

22. Flowers drink water with a capillary
action. Capillary action happens when water
molecules are more attracted to the surface
they travel along than to each other. In paper
towels, the molecules move along tiny fibers.
In plants, they move through narrow tubes
that are actually called capillaries. Plants
couldn't survive without capillaries because
they use the water to make their food