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To test your knowledge

Module by: Siyavula Uploaders. E-mail the author

NATURAL SCIENCES

Matter, measuring and reactions

EDUCATOR SECTION

Memorandum

It is important that learners know that the density of water is 1 g/cm3. This means that 1 litre of water weighs 1 kg.

The assessment proposed in the module is important, also for the learner's portfolio.

Figure 1
Figure 1 (Grafiek.jpg)

LEANER SECTION

Content

Activity: To calculate the density of water [LO 2.3, LO 2.4]

TRANSLATION TASK:

The readings below were obtained after the mass and volume of water were measured:

Table 1
Reading 1 Reading 2 Reading 3 Reading 4 Reading 5
Mass: 50 gVolume: 50 cm3 Mass: 30 gVolume: 30 cm3 Mass: 90 g Volume: 90 cm3 Mass: 80 gVolume: 80 cm3 Mass: 60 gVolume: 60 cm3

Apply the readings above to a graph to show the different ratios and indicate the density of water. (The density is obtained by dividing the mass by the volume.)

CRITERIA FOR ASSESSING THE TRANSLATION TASK:

1. A suitable heading.

2. Both axes correctly marked.

3. Appropriate scale for both axes.

4. Calculated value of the density is correct.

5. All coordinates are drawn correctly.

6. Density correctly calculated and shown (Density: 1 g/ cm3).

ASSESSMENT ACCORDING TO THE CRITERIA

Table 2
LO MARKS LEVEL KEY TO LEVEL
1 and 2 1-34% 1 Unable to prepare the graph
  35-39% 2 Up to 4 mistakes on the list of criteria
  40-69% 3 2 or 3 mistakes on the list of criteria
  70-100% 4 No or only one mistake
Table 3
LO 2.3 LEVEL
LO 2.4 MARK

COMMENTS:

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Assessment

Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

Assessment Standard 2.3: We know this when the learner interprets information by identifying key ideas in text, finding patterns in recorded data, and making inferences from information in various forms (e.g. pictures, diagrams, text);

Assessment Standard 2.4: We know this when the learner application of knowledge: applies knowledge appropriately by connecting the learnt concept to a variation of the known situation.

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Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

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