- Mark the plastic boxes with the numbers 1, 2 and 3.
- Weigh each box and record the results in the table below!
- Measure the height of the cress and record this in the table as well.
- Put the boxes of cress in different places:
Box No. 1: Place the box near a south facing window but don't water it.
Box No. 2: Water the box regularly and place it near a south facing window.
Box No. 3: Make sure the box is wet and then put it in the freezer for 24 hours.
Water Box 2 regularly!
After 24 hours weigh and measure the cress boxes again. Record the results in the table below.
Keep an eye on cress box number 3 after you take it out of the freezer.