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Number and Operations

Exploring the Value of the Whole

3-5
This lesson focuses on the relationship between parts and the whole. These relationships were developed earlier and require the students to consider the size or value of the same fraction when different "wholes" are compared (i.e., the value of x is relative to the whole; x of a small pie is not equivalent to x of a large pie). This lesson promotes problem solving and reasoning as the students compare similar fractions with different "wholes." Students develop communication skills as they work in pairs and share their understanding about the relationship between the value of a fraction and the whole.
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Geometry

Rectangles and Parallelograms

3-5
Students use dynamic software to examine the properties of rectangles and parallelograms, and identify what distinguishes a rectangle from a more general parallelogram. Using spatial relationships, they will examine the properties of two-and three-dimensional shapes. This Internet Mathematics Excursion is based on an E-example from the NCTM Principles and Standards for School Mathematics.
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Data Analysis and Probability

Tally Time

3-5
Students tally data about food preferences and learn the convention of displaying a set of five tallies. Students also answer pose and answer questions about the data.
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Data Analysis and Probability

Can You Picture It?

3-5
This lesson builds on the experiences of the previous lesson. Students collect data about favorite vegetables and record the data in a pictograph and interpret this representation. They also create and use legends for the pictograph.
Data Analysis and Probability

Healthy Eating

3-5
Students collect data about classmates' healthy food knowledge. They create bar graphs, pose and answer questions about the data by looking at the graphs, and find the range and mode.
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Data Analysis and Probability

What Is Your Favorite?

3-5
Students make human bar graphs and circle graphs, then draw them on paper and use a Web site to generate them. Posing and answering questions using the graphs will give the students an opportunity to apply their problem-solving and communication skills. They will also find the mode for a set of data.
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Data Analysis and Probability

Let's Compare

3-5
Students collect numerical data, generate graphs, and compare two data sets. They also find the mean, mode, median, and range of the data sets. Students communicate with each other and the teacher and practice their problem-solving skills.
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Data Analysis and Probability

Alphabet Soup

3-5
In this lesson, students construct box-and-whisker plots. Students use the box-and-whisker plots to identify the mean, mode, median, and range of the data set. Representation is the major focus of this lesson.
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Data Analysis and Probability

Glyphs for All Reasons

3-5
Students learn a powerful way to display data, the glyph. Representation, communication, and problem solving are important parts of this lesson.
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Data Analysis and Probability

Planning a Class Field Trip

3-5
This lesson focuses students’ attention on the variables used in planning trips. It captures students’ interest, provides a review of the primary unit objectives, and assesses students’ prior knowledge. This experience enables students to consider the variables that must be accounted for in planning a class field trip.