(Obj. 1 Highlight 2) Students should be actively participating in lab and field activities. Classrooms, hallways, school grounds, and community resources can be used for these investigations.Peggy Mainord Duncanville ISD

TEKS 6.2, 72, 8.2 (A)

• The student uses scientific inquiry methods during field and laboratory investigations. The student is expected to (A) plan and implement investigative procedures including asking questions, formulating testable hypotheses, and selecting and using equipment and technology.

TEKS 6.4, 7.4, 8.4 (A)• The student knows how to use a variety of

tools and methods to conduct science inquiry. The student is expected to (A) collect, record, and analyze information using tools including beakers, petri dishes, meter sticks, graduated cylinders, weather instruments, hot plates, dissecting equipment, test tubes, safety goggles, spring scales, balances, microscopes, telescopes, thermometers, calculators, field equipment, computers, computer probes, water test kits, and timing devices.

Science investigations occur both inside and outside our science classroom.

How would you determine the top speed of a specific remote control car? You must decide the following:

• Location

• Materials

• Procedure

In your science notebook record how you would carry

out this task.

Where would you go?

• Hallway

• Cafeteria

• Gym

• Outside of school (sidewalk, parking lot, etc.)

What would be your procedure?What materials would be needed?

• How would you determine the distance?

• How would you measure the time?

• How many trials there would be?

• How will data be recorded?

• Timing device

• Measured track

• Remote control and remote control car

How would you complete a project that required you to collect and observe producers, consumers, and decomposers in an aquatic community? In your science notebook write how you would accomplish this.

What equipment would you need?

• Binoculars

• Microscope

• Collecting nets

• Camera

• Gloves

• Bags and/or jars

Where could you go?

• Near your campus?

• A local pond, lake, or stream?

• A zoo?

• Dallas Aquarium?

• Could you observe an aquarium in your classroom?

Students must also know how to select and use equipment in a lab setting.

In a laboratory activity students are required to pour 50 mL of hydrogen peroxide on 2 g of fresh liver and to record the change in temperature every 30 seconds for eight minutes in their science notebooks. What pieces of equipment will most likely be required?

A. Timing device, thermometer, beaker, graduated cylinder, balance, litmus paper B. Timing device, thermometer, hot plate, balanceC. Timing device, thermometer, balance, graduated cylinder, beakerD. Timing device, balance, calculator, hot plate, beaker

The correct answer is:C. Timing device, thermometer, balance,

graduated cylinder, beaker

Why is it correct? It lists equipment needed for each part of the activity:1. Every 30 seconds2. Massing 2 g of liver2. Measuring 50 mL of hydrogen peroxide

3. Change in temperature 4. Container for liver and hydrogen peroxide

TIMING DEVICEBALANCE

GRADUATED CYLINDERTHERMOMETER

BEAKER

A, B, and D are INCORRECT answers:

A. Timing device, thermometer, beaker, graduated cylinder, balance, litmus paper

Activity does not require students to know if it is an acid or base!

A, B, and D are INCORRECT answers:

B. Timing device, thermometer, hot plate, balance

Activity does not require students to add heat, so a hot plate is not needed!

A, B, and D are INCORRECT answers:

D. Timing device, balance, calculator, hot plate, beaker

Activity does not require students to add heat, so a hot plate is not needed; no calculations are required, so a calculator is not necessary.

Graphics are:

• Microsoft Clip Art