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Interdependent Relationships in Ecosystems

Total Unit Running Time: 30-40* minutes

plane logo on green button icon for teacher support pages

FIELD TRIP : Urbanization 

Running Time: 6:14 


With two big cities–Chicago and Hong Kong as distinct backdrops, VVR Host Steve Grubbs stands amid the  skyscrapers to discuss anthropogenic changes that cause challenges to our environment. Issues related to urbanization are ever-growing and this field trip shows how big cities are implementing solutions to lessen the negative  impacts on such growth. For more information, visit here  

Purple puzzle piece logo for teacher support pages


Running Time: Self-paced* 

NGSS: LS3-1 

Fashioned in a 1980s aesthetic, this interactive game allows students to choose their racing level and then maneuver their vehicle while answering questions based on unit content. Physics-based driving controls and track  design seamlessly blend learning and gaming along the colorful routes. Shortcut opportunities embedded in the  tracks are awarded for skilled driving and quick thinking.

video camera logo on blue button icon for teacher support pages

STORY 1 : Maintaining Ecosystem Balance 

Running Time: 7:10 

NGSS: HS-LS2-1, HS-LS2-6 

Topics Covered  

  • Oppositional vs. symbiotic relationships
  • Ecosystem imbalances 
  • Concept of homeostasis 

Assessment Answer Key  & Critical Thinking Skills

  1. D (BT5—synthesis) 
  2. C (BT4—analysis) 
  3. B (BT6—evaluation) 
  4. D (BT5—synthesis) 
  5. C (BT3—application) 
video camera logo on blue button icon for teacher support pages

STORY 2 : Group Mentality

Running Time: 6:51 


Topics Covered 

  • Theory & benefits of group living
  • Hierarchies of groups 
  • Different types of social behaviors

Assessment Answer Key  & Critical Thinking Skills

  1. D (BT5—synthesis) 
  2. B (BT4—analysis) 
  3. C (BT3—application) 
  4. D (BT5—synthesis) 
  5. C (BT1—knowledge)
apple graphic on red button icon for teacher support pages

TEACHER DEMO: Ecological Succession With Wendy  

Running Time: 8:17 


Vocabulary: canopy, spotting, serotinous 

Topics Covered 

  • The role of carbon & the carbon cycle
  • 5 stages of succession 

Assessment Answer Key  & Critical Thinking Skills 

  1. B (BT4—analysis) 
  2. A (BT1—knowledge) 
  3. D (BT5—synthesis) 
  4. C (BT2—comprehension)
  5. B (BT3—application) 


Forester, Fire Fighter, Fish & Wildlife Manger, Ecologist 

Science Standards: 

NGSS: HS-LS2-1, HS-LS2-2, HS-LS2-6, HS-LS2-7, HS-LS2-8; TEKS: 112.34(c.11.B), 112.34(c.11.C), 112.34(c.12.A), 112.34(c.12.B), 112.34(c.12.D),  112.34(c.12.F), 112.37(c.3.D), 112.37(c.3.E), 112.37(c.4.H), 112.37(c.3.F), 112.37(c.8.A), 112.37(c.8.C), 112.37(c.9.E), 112.37(c.9.F), 112.37(c.9.I);  CPALMS: SC.912.L.17.4, SC.912.L.17.5, SC.912.L.17.6, SC.912.L.17.8, SC.912.L.17.12, SC.912.L.17.13, SC.912.L.17.14, SC.912.L.17.15,  SC.912.L.17.16, SC.912.L.17.17, SC.912.L.17.18, SC.912.L.17.20, SC.912.N.4.1, SC.912.N.4.2