Year 10 Practical Assessment Skills Lesson 1 Results tables and Graph Skills Aim: to be able to present results and draw appropriate types of graphs Must: identify mistakes in data recording Should: be able to identify the correct type of graph dependant on the data Could: plot out a graph from given results labelling key features
Graph Skills This is a series of animated flash movies for students to use in a computer suite, to go through as a or for you to use on an interactive white board as an exposition tool. http://www.tes.co.uk/download.aspx?storycode =3005096&type=W&id=3044948
Presenting Results Record your results in a table. What is Wrong with this table? Length Time Time Time Mean Time
Presenting Results You must say what you are measuring in THE UNITS Length (m) Time (s) Time (s) Time (s) Average Time (s)
Choosing the correct type of graph If your Independent variable (What I changed) is a number then you should draw a... line graph
Choosing the correct type of graph If your Independent variable (What I changed) is a number then you should draw a... li e graph
Choosing the correct type of graph If your Independent variable (What I changed) is a number then you should draw a... li e graph
Draw a graph Make sure your graph takes up at least 1/3 of the paper. The Independent variable (what I change) goes along the bottom. The dependent variable (what depends on what has changed) goes up the side. Always write your labels and units on the graph before plotting the results.
Line of best fit This shows the trend of your results. Do not just join the dots It does not have to be a straight line drawn with a ruler.
Drawing a Graph Decide what type of graph you should draw. What variable should go on the bottom axis? Make sure your graph takes up at least 1/3 of the paper. Time (s) 10 15 20 30 30 47 40 61 50 72 60 81 70 81 80 81 90 81 Amount of gas produced (cm 3 )
Drawing a Graph (2) Write the labels and units on the axis before plotting the graph. When you draw your line look for the trend don t just join the dots Time (s) 10 15 20 30 30 47 40 61 50 72 60 81 70 81 80 81 90 81 Amount of gas produced (cm 3 )
Drawing a Graph (3) Once you have completed your graph use the drawing a graph toolbar as a check list. Then ask another pupil to look at your graph with your drawing a graph toolbar Time (s) 10 15 20 30 30 47 40 61 50 72 60 81 70 81 80 81 90 81 Amount of gas produced (cm 3 )
Communicating your Findings Assessment You will be assessed on the way you present and analyse the following information:- A student measure the speed of a duck over 1000m. The student measures the speed every 10 seconds. The results were 0m/s, 12m/s, 24m/s, 35m/s, 47m/s, 53m/s, 55m/s, 55m/s, 55m/s. Present the information:- Suitable table Suitable graph. Write on the bask of the table what you think is happening.
Drawing a graph assessment Draw a graph for the following results. Speed (mph) 20 12 Braking Distance (m) 30 23 40 36 50 53 60 73 70 96
1. Use a sharp pencil 2. Use a ruler 3. Draw two axis 4. Write the numbers or categories on the axis 5. Label the axis 6. Add the units to the axis label 7. Plot the data on the graph 8. Draw a line of best fit if applicable 9. Add a title and underline it On the vertical line (y axis) put the dependent variable. This is what you measured to find out the effect. You might want to start your title A graph to show... Top tip: A line of best fit does not mean joining the dots. Draw a straight or curved line that best fits the data Top tip: Look at your results to determine an appropriate scale. Don t go up to 100 if your highest result is 12! On the horizontal line (x axis) put the independent variable. This is the thing you changed to find out its effect.
Year 10 Practise for Practical Assessment Results Tables and Plotting Graphs Investigating Hooke s Law (Extension of a Spring)
Investigating Hooke s Law Results Force on spring (N) Length of spring (cm) length 0 4.2 Extension of spring (cm)
Investigating Hooke s Law Results Force on spring (N) Length of spring (cm) length 0 4.2 1 4.6 Extension of spring (cm)
Investigating Hooke s Law Results Force on spring (N) length 0 1 2 Length of spring (cm) 4.2 4.6 5.5 Extension of spring (cm)
Investigating Hooke s Law Results length Force on spring (N) 0 1 2 3 Length of spring (cm) 4.2 4.6 5.5 6.5 Extension of spring (cm)
Investigating Hooke s Law Results length Force on spring (N) 0 1 2 3 4 5 Length of spring (cm) 4.2 4.6 5.5 6.5 Extension of spring (cm)... and so on.
Investigating Hooke s Law Results length Force on spring (N) 0 1 2 3 4 5 Length of spring (cm) Extension of spring (cm) 4.2 0 4.6 0.4 5.5 1.3 6.5 2.3 7.9 3.7... and so on.
Investigating Hooke s Law Results Force on spring (N) Length of spring (cm) Extension of spring (cm) 0 4.2 0 1 4.6 0.4 2 5.5 1.3 3 6.5 2.3 4 7.9 3.7 5 8.4 4.2 6 9.0 4.8 7 9.5 5.3 8 10.2 6.0
Extension (cm) Graph of force against extension of a spring. and so on. 3 2 1 0 0 1 2 3 4 5 6 7... and so on. Force (N)