Year 9 ScienceBetter Get Moving! 15Assessment 2 Rubric

Spring ConstantName: Homeroom: Date:

SCIENCE ASSESSMENT: In the assessment, you are going to compare the spring constant of three different springs that

made by different materials.

You will be given one double period to do the experiment and finish the lab report (focus on Crit. C

Processing and evaluating).

Double lesson Carry out the experiment with partner.

Collect the data of the experiment.

Cannot share data.

In a group of two

(assigned by teacher)

Writing lab report by self. Finish writing lab

report.

By self

You don’t need to share your data/ Lab. Report with your partners in the group. Record the

data by yourself.

You will need to bring a regular calculator and stationery to the assessment for drawing

graphs.

Pencil should be used in drawing diagrams or graph.

You will not be allowed to use phones, music players or computers with calculator function.

Only the lab. Report, writing utensils and stationeries are permitted at the desk during the

assessment. You cannot write down any notes on any other paper that without permission.

Use of a dictionary, thesaurus, textbook

You cannot write down any notes on any other paper that without permission.

Use of dictionary, textbook, notes are not allowed.

You MUST use the Rubric to ensure all Criteria are addressed.

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In this Practical Assessment, you are assessed in Criteria C-Processing and evaluating.*-do not meet any descriptors. Crit. 0 1 – 2 3 – 4 5 – 6 7-8

C I tried to record some data.

I tried to do appropriate calculation with my data.

I tried to calculate the spring constant.

I tried to present my results as a graph.

I tried to form a conclusion with my results.

I recorded some data.

I did appropriate calculation with my data.

I calculated the spring constant with mistakes.

I presented my results as a mostly correct graph.

I formed a conclusion with my results.

I recorded enough data with the correct units.

I did appropriate calculation with my data correctly, using the correct units.

I calculated the spring constant correctly and I showed an answer with the correct unit.

I presented my results as a graph, with correct title, axis, and labels.

I referred to my hypothesis and I formed a conclusion with my results and graph.

I recorded enough data (at least two significant figures) and as precise as possible with the correct units.

I did appropriate calculation and show all the working steps with my data correctly, using the correct units.

I calculated the spring constant correctly and showing the steps clearly and an answer with the correct unit.

I presented my results as a very good graph, with correct title, axis, and labels.

I referred to my hypothesis and I formed a clear and correct conclusion with my results and graph.

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Criterion C: Processing and evaluating Maximum: 8 At the end of year 5, students should be able to: i. present collected and transformed data ii. interpret data and explain results using scientific reasoning iii. evaluate the validity of a hypothesis based on the outcome of the scientific investigation iv. evaluate the validity of the method v. explain improvements or extensions to the method. Achievement Level

Level Descriptor

0 The student does not reach a standard identified by any of the descriptors below.

1-2 The student is able to:i. collect and present data in numerical and/or visual formsii. interpret dataiii. state the validity of a hypothesis based on the outcome of a scientific investigationiv. state the validity of the method based on the outcome of a scientific investigationv. state improvements or extensions to the method.

3-4 The student is able to:i. correctly collect and present data in numerical and/or visual formsii. accurately interpret data and explain resultsiii. outline the validity of a hypothesis based on the outcome of a scientific investigationiv. outline the validity of the method based on the outcome of a scientific investigationv. outline improvements or extensions to the method that would benefit the scientific investigation.

5-6 The student is able to:i. correctly collect, organize and present data in numerical and/or visual formsii. accurately interpret data and explain results using scientific reasoningiii. discuss the validity of a hypothesis based on the outcome of a scientific investigationiv. discuss the validity of the method based on the outcome of a scientific investigationv. describe improvements or extensions to the method that would benefit the scientific investigation.

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7-8 The student is able to:i. correctly collect, organize, transform and present data in numerical and/ or visual formsii. accurately interpret data and explain results using correct scientific reasoningiii. evaluate the validity of a hypothesis based on the outcome of a scientific investigationiv. evaluate the validity of the method based on the outcome of a scientific investigationv. explain improvements or extensions to the method that would benefit the scientific investigation.

Practice:

Aim: to find out the spring constant of a copper spring

Hypothesis:

Risk Assessment The glass rod and weights shouldn’t fall in the floor. It should be handled with great care.

Materials: Glass rod(1) Copper wire( 60 cm), meter ruler(1), ruler(1), paper to make the pointer(Optional), scissors(1), clamp(2), stand(1), slotted weights(10) (10g each)

Procedures:1. Make three springs with different materials by using the glass rod: copper wire, nickel wire,

iron wire (Same thickness and length)

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2. Fix a pointer at the bottom of the spring, with a ruler next to it.3. Read the start position of the pointer on the scale. Write it down in a proper table.4. Add one weight to your spring. Use the pointer to measure how much longer the spring has got.

This is called the extension.

Name: ( ) Homeroom:Data collection: (Crit. C- I recorded enough data (at least two significant figures) and as precise as possible with the correct units in a proper table.)

Load (equal weights)

Extension of copper spring (mm)

0 weight

1 weight

2 weights

3 Weights

4 Weights

5 Weights

6 weights

7 weights

8 weights

9 weights

10 weights

Processing data: (Crit. C- I did appropriate calculation and show all the working steps with my data correctly, using the correct units.)Load (equal weights)

Force exerted on the spring (N)F=ma

Mass (kg), Acceleration(10ms-2)

Extension of copper spring (m)

0 weight

1 weight

2 weights

3 Weights

5

4 Weights

5 Weights

6 weights

7 weights

8 weights

9 weights

10 weights

As this is a practice, you may not have enough data to plot a graph. Anyway, in the real assessment, you should plot a graph with best fit line.Processing data: (Crit. C- I presented my results as a very good graph, with correct title, axis, and labels.)

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Calculate the spring constant of each spring:(Crit. C- I calculated the spring constant correctly and showing the steps clearly and an answer with the correct unit.)Spring constant of copper spring

Conclusion: (Crit. C-I referred to my hypothesis and I formed a clear and correct conclusion with my results and graph.)

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