Friday September 2, 2011 Objective: You will know when a bar graph is used and what the parts of it are. Homework: Study for Scientific Process Quiz

Today’s Agenda Analyze our balloon lab data (graph it) Write our conclusion Communicate our results Complete study guide for Tuesday’s quiz Today’s Agenda

Graphing- Types of Graphs Bar graph Line Graph Pie or Circle graph Pictograph Graphing- Types of Graphs

Bar graphs are used to show comparisons between two or more things- in this case, favorite color of juice. Notice there are labels for each axis and a title for the graph. Bar Graph

Line graphs are used to show how something has changed over time Line graphs are used to show how something has changed over time. In this case, the graph is showing the number of facts this student got right during a four day period. Do you see anything wrong with this graph? Line Graph

We typically use a pie chart to compare things We typically use a pie chart to compare things. It is a good tool to use when you are comparing percentages. Pie Graph

A pictograph is similar to a bar graph A pictograph is similar to a bar graph. It is used to compare two or more things. Instead of drawing bars to show how many, you create graphics to show amounts. Pictograph

Graphing Our Data

Please answer the following questions using complete sentences. Was your hypothesis correct or incorrect? Explain. (2 sentences) How did the lab go? (use at least 2 adjectives) What is one thing you would do differently if you did the experiment again? Draw Conclusions

We use the scientific process to try to answer questions and solve problems. When we gather information about something using one or more of our senses, it is called an observation. A statement that describes an observation and tries to explain that observation is called a hypothesis. We use it to try to answer a question in science. Study Guide

4. Once we form our hypothesis, we design an experiment to prove our hypothesis right or wrong. 5. Anything in an experiment that can be changed is called a variable. 6. In an experiment, we change one variable at a time. Study Guide

d. Conduct the experiment and collect data/observations The steps of the scientific process include: a. Ask a question b. Form a hypothesis c. Design an experiment d. Conduct the experiment and collect data/observations e. Analyze your data f. Draw Conclusions g. Share results Study Guide

Observation: Mr. Foss notices that the grass in his front yard is starting to turn brown. Question: Why is the grass in Mr. Foss’s front yard turning brown? Hypothesis: The grass in Mr. Foss’s front yard is turning brown because he is not watering it enough. Study Guide

Have a Great 3-Day Weekend! http://www.youtube.com/watch?v=NMO99 gb7GvU Have a Great 3-Day Weekend!