Each group needs:

• 2 large plastic bins with lids, 5.5 L (6 qt.), available online
• 2 small rectangular plastic bins with lids, 500 ml (17 oz.), available online
• soil, 7.5 L (8 qt.) available online   
• mulch, 7.5 L (8 qt.) available online
• sand, 7.5 L (8 qt.), can be collected or purchased
• container for sand
• plastic cup or trowel
• water
• hygrometer, available online
• spray bottle
• graduated cylinder
• chart paper/markers for presentation to class

To share with the entire class:

• electronic digital scale
• small bin used for measuring quantities on the scale
• gloves
• computers or laptops
• information on hingeback tortoises (see the References section)
• knife or hot-glue gun (for the teacher to make holes in plastic)
• KWL Chart
• The Problem with Moisture - Humidity for Kids science book, available online            

Each student needs:

• lab notebook
• pen
• Chart A and Chart B
• Design Plan Sheet
• Final Design Rubric
• Post-Activity Quiz