Texas TEKS 5.12

5.12 is a TEKS knowledge and skills statement. These are the student expectations under it.

• 5.12.A

  observe and describe how a variety of organisms survive by interacting with biotic and abiotic factors in a healthy ecosystem

• 5.12.B

  predict how changes in the ecosystem affect the cycling of matter and flow of energy in a food web

• 5.12.C

  describe a healthy ecosystem and how human activities can be beneficial or harmful to an ecosystem.

01

What Students Need to Do

Students identify how living things use other organisms and nonliving resources such as water, light, air, soil, and temperature. They trace matter and energy through food webs, predict the effects of environmental changes, and judge how people help or harm ecosystem health.

02

What Mastery Looks Like

Given an ecosystem model, students can explain several organism interactions and connect each organism to needed resources. They can predict a chain of effects after one factor changes and support the prediction with food web evidence. They can also name signs of ecosystem health and explain helpful and harmful human actions.

03

Common Misconceptions

Students may think energy cycles like matter, or that plants get food from soil instead of making sugars with light. They may treat every predator as harmful, overlook decomposers, or assume one population change affects only one species. They may also label every human action as harmful without considering evidence or scale.

04

How to Assess It

Give students a pond food web and ask: A drought lowers the water level and kills many water plants. Predict two effects on organisms, explain what happens to energy and matter, and name one human action that could help.

1. 01

   Build a bottle ecosystem with soil, plants, pill bugs, water, and light, then record daily evidence of biotic and abiotic interactions.

2. 02

   Ask students which pond organism a drought would affect first, then have them defend their choice in writing and with a partner.

3. 03

   Give groups food web cards and event cards; teams rearrange connections and earn a point for each evidence-based prediction.

4. 04

   Compare photos of a local creek before and after cleanup, then list human actions that improved or damaged ecosystem health.

• 3.12

  The 3rd Grade version of this standard.

• 1.12

  Organisms and environments. The student knows that the environment is composed of relationships between living organisms and nonliving components. The student i...

• 2.13

  Organisms and environments. The student knows that organisms have structures and undergo processes that help them interact and survive within their environments...

• 4.12

  The 4th Grade version of this standard.