Start a 10-Day Free Trial to Unlock the Full Review

Why Lesson Planet?

Find quality lesson planning resources, fast!
Share & remix collections to collaborate.
Organize your curriculum with collections. Easy!
Have time to be more creative & energetic with your students!

Adding by Dividing

Cell-ute the cell! Examine how surface-to-volume ratio relates to cell size through hands-on exploration, observe cell division under the microscope, and collect data on the stages of cell division in an onion root tip. Learners pull it all together in a laboratory report with a histogram generated in Excel.

19 Views 13 Downloads
CCSS: Adaptable
NGSS: Adaptable
Instructional Ideas

  • Before using the microscope, show a diagram of a root tip with the different zones
  • Demonstrate what cells in interphase look like so learners can easily identify which cells are dividing and which cells are not
  • Spark interest by reinforcing the concept  that cancer (tumor formation) is simply uncontrolled cell growth
Classroom Considerations

  • Contains components for the classroom, laboratory, and computers, but it could be modified for use without computers

  • Allows for self assessment through pre/post anticipation guide
  • Provides two hands-on activities to connect knowledge
  • Includes a rubric for lab reports with histograms

  • Learners will need to recognize the stages of cell division and parts of an onion root tip, but the lesson does not provide this preparation


Common Core

Included Materials

  • "Worksheet: Anticipation Guide"
  • "Worksheet Answers: Anticipation Guide"
  • "Worksheet: Why Are Cells So Small?"
  • "Worksheet: Microscope Exercise Part 1"
  • "Worksheet: Microscope Exercise Part 2"
  • "Step Sheet: Creating a Data Table and Line Graph"
  • "Sample: Histogram"
  • "Adding by Dividing Rubric"
  • Worksheet: Anticipation Guide
  • Worksheet Answers: Anticipation Guide
  • Worksheet: Why Are Cells So Small?
  • Worksheet: Microscope Exercise Part 1
  • Worksheet: Microscope Exercise Part 2
  • Step Sheet: Creating a Data Table and Line Graph
  • Sample: Histogram
  • Adding by Dividing Rubric

Be the first to comment

Join Lesson Planet Community, our free teacher discussion forum, to share ideas about this resource, and more.

Join the Conversation

What Members Say

Amanda C.
Lesson Planet has helped me tremendously as a novice teacher.
Amanda C., Science Teacher
Jackson, MS