For pre-activity practice, each group/student needs:

• Practice Sample Data Spreadsheet (Excel file)
• Practice Sample Data Worksheet
• computer or laptop with Excel®, Google Sheets, GeoGebra or other computing spreadsheet; such as a Lenovo N22 Winbook Chromebook for $149 at https://www.amazon.com/Lenovo-Winbook-80SF0000US-11-6-Chromebook/dp/B01CYUPLCU

Each group needs:

• Vernier temperature sensor, such as the stainless steel temperature probe at https://www.vernier.com/products/sensors/temperature-sensors/tmp-bta/; see below for alternative
• Vernier LabQuest 2 sensor interface and data collector at https://www.vernier.com/products/interfaces/labq2/ OR Vernier LabQuest Mini at https://www.vernier.com/products/interfaces/lq-mini/
• Statistical analysis app, free in app store; such as for Android or iOS
• Activity Procedure Handout
• disposable cup, 18-oz (.5-liter) size, such as a “Solo cup,” to measure an amount of soil
• potting soil, 18 oz, such as from a 1 cubic foot bag (enough for 50 groups!)
• beaker, 400-500-ml size
• graduated cylinder, large enough for 25 ml of water, such as a 25-ml glass cylinder with plastic base
• water
• heat source, such as a heat lamp for reptile, greenhouse or outdoor patio; heat source temperature to use can be determined by teacher
• computer or laptop with Excel, Google Sheets, GeoGebra or other computing spreadsheet
• Write-Up Requirements
• (optional) Data Analysis Rubric 

Alternative to digital sensors
If you do not have access to Vernier sensors (and the LabQuest devices), use digital thermometers and timers/clocks (to note one-minute increments) as an alternative data collection method, such as this economy digital pocket thermometer at https://www.flinnsci.com/flinn-digital-pocket-thermometer-economy-choice/ap6049/#variantDetails. With this method, the data needs to be manually entered into the statistical analysis app.

To share with the entire class:

• Google Sheets spreadsheet, to enable entire-class statistical analysis
• a rolling cart or shelf, such as the Economy plant stand with shelves at https://www.flinnsci.com/economy-plant-stand/fb0629/
• capability to show students a 2:51-minute online video at https://www.youtube.com/watch?v=IuXuZwX777E