Comparing Columns on a bar graph
1 The Hook
- Ask students to name the types of drinks that they like, and list their examples on the board.
- Write a color name beside each drink listed based on what students tell you.
- As a group, choose the top 4 drink choices.
- Tell students to choose a color cube to represent the type of drink that they like the most.
- Ask students to connect cubes together by color
- Record the number of cubes for each color on the board.
- Identify a color to represent each drink listed.
- Choose a color cube to show which drink is liked the most.
- Students will work together to connect color cubes together and create a model of a bar graph.
2 Direct Instruction
- Using the color cubes, create a bar graph.
- Ask students questions about what they see when they look at the graph.
- Write their responses on the board.
- Ask questions that involve "how many more?" or how many less?"
- Students will make observations about the color cube bar graph that was created.
- They will make statements and ask questions.
3 Guided Practice
- On the Illuminations website find the lesson about Comparing Columns on a bar graph.
- Open the link - Bar Grapher Tool described in the lesson.
- Create a bar graph with the class to show the results of what students like to drink.
- Explain that the data is still the same as when the color cubes were used to create a model bar graph.
- Students will continue to give their observations about the bar graph by making comparisons about the columns.
4 Independent Practice
- Print the graph paper from the link provided.
Ask students to create their own bar graph by coloring in boxes on graph paper to match the total number for each drink choice.
- Students will use graph paper to color in boxes to show the correct number of color cubes which represent drink choices.
- They will write 2 statements that compare the bar graph and one question that could be asked about the graph.
- Ask the students to share their bar graphs with the class.
- Have students read statements that they wrote about their bar graph.
- Students will share their graphs with each other and visitors by displaying their graphs and statements in the classroom either on a bulletin board, or a class book of graphs.
Key Standards Supported
Measurement And Data
Organize, represent, and interpret data with up to three categories; ask and answer questions about the total number of data points, how many in each category, and how many more or less are in one category than in another.
Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories. Solve simple put- together, take-apart, and compare problems4 using information presented in a bar graph.
Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by making repeated measurements of the same object. Show the measurements by making a line plot, where the horizontal scale is marked off in whole-number units.