Work in Progress
Please pardon our progress while we refine the look and functionality of our new ALEX site! You can still access the old ALEX site at If you would like to share feedback or have a question for the ALEX Team, you can use the contact form here, or email us directly at
Science (2015) Grade(s): 2


Plan and carry out an investigation, using one variable at a time (e.g., water, light, soil, air), to determine the growth needs of plants.

Unpacked Content

Scientific and Engineering Practices

Planning and Carrying out Investigations

Crosscutting Concepts

Cause and Effect


Students know:
  • Basic growth needs of plants include water, nutrients, light, and air.


Students are able to:
  • Conduct an investigation to produce data used as evidence.
  • Determine the growth needs of plants.
  • Collaboratively develop an investigation plan that describes key features of the investigation and isolates variables as needed.


Students understand that:
  • There are observable patterns present in the growth of plants that can be used to determine the needs of plants.


  • Investigation
  • Variable
  • Water
  • Light
  • Soil
  • Air
  • Nutrients
  • Causes
  • Effects
  • Isolate