Starter In pairs… Use the paper to sketch a J-curve and an S-curve. Be ready to explain what is happening in your graphs because I could pick on you!

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Presentation transcript:

Starter In pairs… Use the paper to sketch a J-curve and an S-curve. Be ready to explain what is happening in your graphs because I could pick on you!

Learning outcomes All of you will be able to: Sketch an S-curve and J-curve and describe you graphs. Most of you should be able to: Construct a suitable graph for the IB from the data provided. Interpret what the different graphs are illustrating using the key terms that you have seen.

Take the data provided and construct the graph. Look at the data first of all and decide if you will create a bar graph or a line graph. Remember the criteria we use when drawing a graph… 1. It occupies two thirds of the paper provided. 2. The scale is evenly spaced. 3. A pencil has been used. 4. A ruler has been used. 5. Both axes have been labelled accurately with units. 6. The graph has a suitable title. 7. Use crosses (+) not kisses (x).

Now… Write a paragraph describing and explaining what you can see happening in your graph. Remember: include data when describing your graph and key terms when explaining it. Keep the description for yourself and switch your graph with the person next to you. Mark each others graphs based on the following criteria.

Graph mark scheme 1. It occupies two thirds of the paper provided. (1) 2. The scale is evenly spaced. (1) 3. A pencil has been used. (1) 4. A ruler has been used. (1) 5. Both axes have been labelled accurately. (1) 6. Units are included. (1) 7. The graph has a suitable title. (1) 8. Uses crosses (+). (1) 9. Points have been joined with a ruler. (1) Give them their score out of 9 marks

Now… Write a paragraph describing and explaining what you can see in your neighbours graph. In pairs assess both your paragraphs: 1. Have you used data from the graph when making your description? (2 marks for each paragraph) 2. Have you included the key terms: exponential growth, carrying capacity and limiting factors? (3 marks) 3. Have you interpreted what is happening to the growth of each population… why does the S-curve level off? Why does the J- curve continue? (2 marks for each paragraph)

Check - Learning outcomes All of you will be able to: Sketch an S-curve and J-curve and describe you graphs. Most of you should be able to: Construct a suitable graph for the IB from the data provided. Interpret what the different graphs are illustrating using the key terms that you have seen.