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Learn From Home

Learning resources brought to you by Tucson Unified's Curriculum and Instruction

We've provided a rich selection of free, fun online learning sources in English language arts (ELA), math, science, and visual arts to supplement your learning. These are organized by grade level. Click the grade level for your child to get started!

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How to Use This Page

This page contains a "menu" of lessons and activities for this week. You will find the objectives: the specific skills that you work on. Then you will find a selection of lessons and activities which help you practice and master those skills. If you run into technical issues or other difficulties with any of these, simply move on and choose another.


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Biology- Week Five

Printable Version of this lesson board in PDF format

High School Biology

Week 5 May 4-May 8

Weekly Packet

Topic: Energy Flow Through Ecosystems
Learning Objectives: Students will be able to:

  • explain how energy flows through an ecosystem.
  • describe feeding relationships between organisms at different trophic levels in an ecological pyramid.
  • calculate energy transfer between trophic levels and explain why it is not 100% efficient.
  • predict the effect of a change in the population of one organism on the populations of other organisms connected in a food web.

Lessons and Student Instructions
Lessons 1: Watch one or more video lessons and take the practice quiz.

Complete the “Ecological Pyramids POGIL”

At Home Learning Packet
Ecological Pyramids POGIL

Additional Resources and Practice
Trophic Levels Review
Identifying Roles in a Food Web

Lesson 2: Choose one of the Online Interactives to try.

Extensions and Additional Resources are provided for review and to extend your learning.

Extensions are provided to extend your learning.


Watch this short video about The Wolves of Yellowstone. Create a Food Web or diagram that shows the interactions among the organisms described. How did removing the wolves affect this ecosystem? How might this story apply to other ecosystems?

Construct a Sonoran Desert Food Web


Ecosystem – a community of organisms interacting with each other and with their environment
Primary Producer (autotroph) - an organism that can make its own food from sunlight and/or inorganic compounds
Primary Consumer (herbivore) – an organism that consumes a primary producer for food
Secondary Consumer (carnivore) - an organism that consumes a primary consumer for food.
Biomass - the total mass of organisms within a given area

Tertiary Consumer (secondary carnivore) - an organism that consumes a secondary consumer for food
Detritivore – an organism that eats dead or decaying organisms (ex: earthworms, crabs)
Decomposer – an organism that breaks down the bodies of dead organisms for food (ex: bacteria, fungi)
Food Web - a network of feeding interactions, usually consisting of multiple food chains
Trophic Level - each step in a food chain or food web; organisms categorized into higher trophic levels are further from the original energy source

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Free Meals for Kids!

TUSD Grab And Go Meals for Students
Grab-And-Go Info

Grab-And-Go Meal Routes resume Jan. 4. If you have questions or want information about alternative pick-up options, please email


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