Each student needs:

• safety eyeglasses
• protective gloves
• Lab Notes Graphic Organizer
• Presentation Rubric

Each group needs:

• a plant in a transparent container
• note: it should be far enough into the growth phase that roots can be clearly observed
• container with only soil
• mist spray bottles with measurements on the bottle
• clear ruler (in cm)

To share with the entire class:

• weights to act as a force on top of the tested soil
• metric weight set (two sets recommended; available at Learning Resources or other online sources)
• PocketLab with pressure sensor (PocketLab and pressure sensor available online; activity can be modified to use a different tactile pressure sensor)
• fertilizer (for one group)
• herbicide (for one group)