Welcome! The outline below is an evolving main menu for our high school, NGSS-aligned  biology curriculum.

If you’re a current user of our AP or College-level biology, you’ll find much that’s familiar. That’s because many of our AP and College-level tutorials were originally written for use with my 9th grade students. At the same time, wherever necessary, I’ve redesigned tutorials to work for 9th graders. That’s particularly true in units related to biochemistry, cellular respiration, photosynthesis, and molecular genetics.

If  you’re interested in getting updates about new modules and features, please sign up below. Please be assured that I, Mr. W, will NEVER use your email address to do anything other than to email you about the materials I’m creating to help your students learn biology. 


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Topics in blue are ready for review. Please take a look and let me know what you think.

Biology: Introduction and Core Concepts

  • What is biology?
  • Setting the context: A very brief history of life on Earth
  • Properties of Living Things
  • Structure Determines Function
  • Levels of Biological Organization
  • Adaptation and Natural Selection

Life’s Chemical Building Blocks

Cells and Membranes

Energy at the Cellular Level

Cell Division

DNA and Molecular Genetics


  • Meiosis (importance of meiosis, phases, nondisjunction and chromosomal variation)
  • Genetics   (Genes, autosomal inheritance, blood type, sex linked genes)



  • What is ecology?
  • Capturing Energy: Producers,  Consumers, and Trophic Levels
  • Ecological Communities
    • Niches and Habitats
    • Species Interactions
    • Keystone Species and Trophic Cascades
  • Population ecology
    • Population Growth
    • Carrying Capacity
  • Ecosystem stability, resilience, and disturbance
  • Human impact upon the environment

Additional Topics

  • Social Behavior and Group Interactions
  • Feedback and Homeostasis
  • Viruses and Vaccines
  • Genetic Engineering
  • Human Population Growth