Texas TEKS 4.5

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

• 4.5.A

  identify and use patterns to explain scientific phenomena or to design solutions

• 4.5.B

  identify and investigate cause-and-effect relationships to explain scientific phenomena or analyze problems

• 4.5.C

  use scale, proportion, and quantity to describe, compare, or model different systems

• 4.5.D

  examine and model the parts of a system and their interdependence in the function of the system

• 4.5.E

  investigate how energy flows and matter cycles through systems and how matter is conserved

• 4.5.F

  explain the relationship between the structure and function of objects, organisms, and systems

• 4.5.G

  explain how factors or conditions impact stability and change in objects, organisms, and systems.

01

What Students Need to Do

Students find patterns and test cause-and-effect links to explain observations or suggest solutions. They use measurements, scale, and models to compare systems, show interacting parts, and connect structures with jobs. They track matter and energy, account for matter as it changes form or location, and predict how conditions affect stability.

02

What Mastery Looks Like

Given a pond model, a student labels parts, traces energy and matter, and explains how the parts depend on one another. The student uses measurements or repeated observations to support a pattern or cause-and-effect claim and predict what happens when one condition changes. The student also explains how a plant or animal structure serves a specific function.

03

Common Misconceptions

Students may call something a pattern after one or two observations, or assume that events occurring together prove causation. They may think energy gets used up or matter disappears during melting, decay, or evaporation. They may also treat system parts as independent and assume a larger model behaves exactly like the real system.

04

How to Assess It

Give students a diagram of a closed terrarium with sunlight, a plant, soil, water, and a worm. Ask: "Trace one matter cycle and one energy path, then predict and explain what changes if sunlight decreases."

1. 01

   Build a paper-cup water system with holes and tubing, then change one part and record effects on flow and stability.

2. 02

   Write how a bird's beak shape helps it eat and what evidence would show a cause-and-effect link.

3. 03

   Play System Match with cards showing parts, functions, inputs, outputs, patterns, and changes, then have teams justify each completed set.

4. 04

   Compare two local weather reports, identify a pattern, and recommend one school recess plan based on temperature, wind, and rainfall.

• 6.5

  The 6th Grade version of this standard.

• 5.5

  The 5th Grade version of this standard.

• 7.5

  The 7th Grade version of this standard.

• 3.5

  The 3rd Grade version of this standard.