This interactive Java applet game has a user adding positive and negative ...

This interactive Java applet game has a user adding positive and negative integers to arrive at a sum of zero. Seven overlapping circles form a ring similar to a Venn diagram. Five blue numbers are in position when the game begins. The remaining nine numbers (from -6 through 7) must be placed in the empty spaces to produce a sum of zero in each circle. There is a unique solution for each puzzle. Instructions for users and teacher information are available through links at the top of the page.

This activity is an investigation to determine the effect of soil type ...

This activity is an investigation to determine the effect of soil type on plant growth. The students will develop an understanding of the plant as producer.

This is a task from the Illustrative Mathematics website that is one ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Maned wolves are a threatened species that live in South America. People estimate that there are about 24,000 of them living in the wild. The dhole is ...

The first of these word problems is a multiplication problem involving equal-sized ...

The first of these word problems is a multiplication problem involving equal-sized groups. The next two reflect the two related division problems, namely, "How many groups?" and "How many in each group?"

This is a task from the Illustrative Mathematics website that is one ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: The number line below shows two numbers, 0 and 1. Where is $\frac14$ on this number line? http://www.youtube.com/watch?v=HJ0LDgxVGfU...

In this lesson, students will work with math manipulatives to understand that ...

In this lesson, students will work with math manipulatives to understand that it takes 10 tenths of something to make one whole. They will use manipulatives with money (dimes), fractions (one tenth pieces), and base ten blocks (rods) to show different values. They will express values with combinations of the given manipulatives and draw their solutions. This is lesson one in a three lesson unit. Lesson two (HAPPY HUNDREDTHS) deals with hundredths and lesson three deals with combining and solving problems with tenths and hundredths (SHOPPING WITH TENTHS AND HUNDREDTHS).

This is a task from the Illustrative Mathematics website that is one ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important aspects of the task and its potential use.

In this 21-minute video of a third grade class, the teacher, Carolyn ...

In this 21-minute video of a third grade class, the teacher, Carolyn Bereska, guides students through an exploration of probability terms utilizing a "walk-on number line". Along with the video, there are support materials: a math lesson plan and a professional development guide.

These 4 activities, part of the Mathematics Developmental Continuum of the State ...

These 4 activities, part of the Mathematics Developmental Continuum of the State of Victoria, Australia, are intended to introduce young learners to types of angles and tessellations through the use of pattern blocks and tangrams. Supporting documents, materials, and teaching strategies are included.

This is an activity about structures in space. Learners will construct two ...

This is an activity about structures in space. Learners will construct two different types of trusses to develop an understanding of engineering design for truss structures and the role of shapes in the strength of structures. For optimum completion - this activity should span 3 class periods to allow the glue on the structures to dry. This is engineering activity 1 of 2 found in the ISS L.A.B.S. Educator Resource Guide.

This is an activity associated with activities during Solar Week, a twice-yearly ...

This is an activity associated with activities during Solar Week, a twice-yearly event in March and October during which classrooms are able to interact with scientists studying the Sun. Outside of Solar Week, information, activities, and resources are archived and available online at any time. Learners will use SOHO spacecraft images of a coronal mass ejection and tracing paper to measure and then calculate the speed of the coronal mass ejection. This activity is scheduled to occur during Wednesday of Solar Week.

In this activity, learners prepare four polymer elastomers and then compare their ...

In this activity, learners prepare four polymer elastomers and then compare their physical properties, such as texture, color, size, and bounce height. This activity is a fun way for learners to become more familiar with polymers and their uses. Safety note: The "Teacher Notes for Level 1" link contains a number of safety guidelines that should be read before doing this activity.

This is a task from the Illustrative Mathematics website that is one ...

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: The number line below shows two numbers, 0 and $\frac53$. Where is 1 on this number line? http://www.youtube.com/watch?v=wAXRjMUgiu4...

In this 10-minute video Lynne McClure introduces NRICH's Magic Vs problem to ...

In this 10-minute video Lynne McClure introduces NRICH's Magic Vs problem to a small group of teachers in a professional development setting. She demonstrates how a "Low Threshold, High Ceiling" problem, with minimal skill requirements, can be approached by nearly all learners, and yet can elicit sophisticated mathematical thinking. As Lynne leads participants through a sequence of challenges, she models good questioning and communication practices and discusses instructional strategies. The Magic V problem and a follow-up video are cataloged separately.

This lesson is the third lesson in a unit beginning with Amazing ...

This lesson is the third lesson in a unit beginning with Amazing Arrays and Amazing Arrays 2X1. In this lesson students solve a multiplication problem by drawing arrays and segment the areas in several ways to solve the problem. Students will also apply the distributive property, explore rotations of area models to demonstrate the commutative property of multiplication, and match a word problem with its array.

This 11-minute Flash presentation explains CCSS Mathematical Practice 61and illustrates how it ...

This 11-minute Flash presentation explains CCSS Mathematical Practice 61and illustrates how it applies in the K-5 classroom. It addresses Implications for classroom instruction such as the need to build vocabulary and comprehension skills, to teach a problem solving process and the need to try a new strategy if the first or second doesn't work the first time. Practical strategies for implementation and sample problems are included. A transcript of the audio is available for download (PDF).

This interactive Java learning tool allows a teacher to demonstrate and explore ...

This interactive Java learning tool allows a teacher to demonstrate and explore the distributive property with expressions in the factored form (a + b) (c + d) using a matrix multiplication method with students. Sliders determine the number values from 20 to -20 with increments of one-tenth. Check boxes show or hide the factored form, starting matrix values, matrix, products in the matrix, and solution.

This is an activity about orbital mechanics. Learners will investigate how lateral ...

This is an activity about orbital mechanics. Learners will investigate how lateral velocity affects the orbit of a spacecraft such as the ISS. Mathematical extensions are provided. This is science activity 1 of 2 found in the ISS L.A.B.S. Educator Resource Guide.

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