Target Student Performance
Students harvest their radish plants and dry down the plants and the paper towel or gel in preparation for Activity 3.4.
Resources You Provide
- Tubes of radish plants from the Pre-Lesson (1 per student)
- Digital scale (1 per group)
- Small containers to collect gel from individual tubes to mass.
- Small paper bags or envelopes for drying plants (1 per plant)
- Sunny windowsill or drying oven (domestic ovens work at low settings)
- Markers to label plants by student or group (1 per group)
Resources Provided
- 3.2GL Observing Plants’ Mass Changes, Part 1 Worksheet (1 per student)
- Grading the 3.2GL Observing Plants’ Mass Changes, Part 1 Worksheet
- 3.2GL Observing Plants’ Mass Changes, Part 1 PPT
Setup
- Each student or group of 4 students should have 1-2 tubes. For each group, provide a container to collect the gel that the students will extract from the plant roots. Unless you choose to dry out the gel, it will be discarded after the investigation.
- Provide a paper towel, small paper bags, or envelopes (1 per plant), on which to place the plants to dry.
- After the activity, students can assist with cleanup by rinsing out the plant test tubes.
- Prepare your computer and projector for the 3.2GL Observing Plants’ Mass Changes, Part 1 PPT.
- Print one copy per student of the 3.2GL Observing Plants’ Mass Changes, Part 1 Worksheet.