This interactive Flash puzzle helps children develop number sense and an understanding of our decimal number system. A 0-99 square has been cut into 11 irregular pieces which the user re-assembles. A printable (pdf) version is included along with questions for Getting Started and a Teachers' Resources page with implementation suggestions.

This iOS app requires students to use a ten frame to fill in the remaining addend with contrasting chips and then count them to tell how many more to make ten. The app can be set to build sequentially or it can be set to give random values. Additionally, the app includes an option to show number sentences when the problem is complete.

This short article suggests ten math activities which parents can incorporate into their children's summer routines to prevent loss of learning over the summer months. These suggestions can be used year round to help students develop number sense and positive connections to mathematics.

In this video segment from Cyberchase, the CyberSquad replaces a piece of track to get the Madre Bonita Express to the Mother's Day harvest.

This activity includes an assessment, analysis, and action tool that can be used by classrooms to promote understanding of how the complex current issues of energy, pollution, supply, and consumption are not just global but also local issues.

This video adapted from the Valdez Museum & Historical Archive, explores what happened during the Great Alaska Earthquake of 1964 through original footage, first-person accounts, and animations illustrating plate tectonics.

This movie shows a total eclipse of the Sun which occurred in 1994. It is accompanied by a link to a written description of the Sun's physical characteristics.

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: Materials * Completed monthly weather recording sheet * Crayons * Sentence strips with frames (see below) * Student worksheet Actions Every day for a m...

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.

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.

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.

This web page provides links to resources aligned to the CCSS that guide and support first grade mathematics teaching and learning. Tasks developed by the Mathematics Assessment Resource Service (MARS) and Problems of the Month, (POM home page is cataloged separately) developed by the Noyce Foundation are included. The activities were designed to measure students' ability to solve non-routine problems, explain and justify their solutions, and promote high level thinking skills. Resources are listed for specific grade 1 standards and are also organized by progression for an alternate search route.

This page hosts a collection of geometric tasks in pdf format that are aligned to the CCSS standards 1.G1 through 1.G3. It also has links to supplementary literature and learning materials.

This page provides examples of 1st Grade Measurement and Data activities aligned with the Common Core State Standards. A CCSS standard is stated and the possible activities are listed below and linked. All activities are suitable for use in Math Centers, small group, or whole class settings and are designed to elicit a range of responses and provide opportunities for students to communicate their reasoning and mathematical thinking. Instructions for each task are typed in large print and written in child-friendly language to enable students to work on activities independently after a brief introduction to the task. All files for 1st Grade Measurement and Data Activities listed are in PDF format.

This animation highlighting the phases of the Moon was released by the Scientific Visualization Studio at NASA Goddard Space Flight Center.

In this activity, students determine their own eyesight and calculate what a good average eyesight value for the class would be. Students learn about technologies to enhance eyesight and how engineers play an important role in the development of these technologies.

This interactive addresses the question if we can reduce CO2 emissions by 20% of 1990 levels and help avoid dangerous climate change? Users of this interactive can manipulate changes to various sources and uses (supply and demand) of energy with the goal of reducing C02 emissions in Great Britain by 80% in the year 2050.

This blog page offers more than 25 activities and games that use a Hundred Chart to develop students' skills and concepts in a variety of math topics: basic operations, number sense, patterns, number theory, fractions, decimals, and logic. The suggestions include links to materials and to other websites.

This 34-page document (pdf) identifies student learning outcomes for each of eleven 21st Century Skills and provides examples of tasks for grade 4, 8, and 12. It strives to fuse mathematical content and mathematical practices with the 4Cs (communication, collaboration, critical thinking and creativity) and integrate them with interdisciplinary themes. Each skill is aligned with CCSS mathematical practices. This map was designed by the Partnership for 21st Century Skills (P21) in cooperation with the Mathematical Association of America (MAA), the National Council of Teachers of Mathematics (NCTM), and dozens of math educators across the country.

This NOAA visualization on YouTube shows the seasonal variations in sea surface temperatures and ice cover from 1985 to 2007. The visualization is based on data collected by NOAA polar-orbiting satellites. El NiÃo and La NiÃa are easily identified, as are the trends in decreasing polar sea ice.

This problem with multiple solutions offers an opportunity for students to practice simple addition and subtraction, work with number sentences (equations), and develop systematic work habits. Given cards containing the addition, subtraction and equal signs along with the digits 2, 4, 6, and 8. solvers are challenged to find as many ways as possible to arrange some or all seven cards to create true statements. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, printable cards (pdf) and a link to an interactive Flash applet.

This number challenge is an opportunity to reinforce mental arithmetic and order of operations while developing systematic work habits. Students are asked to use the numbers 4, 6, 6, and 8 (exactly once each) and the four basic operations to find as many ways as they can to represent the number 24. There are over 60 different ways! The Teachers' Notes page includes suggestions for implementation, discussion questions, ideas for support, and a link to a related article, Opening Out. (cataloged separately).

This Java applet game promotes mental math and strategic thinking skills using a card from Suntex's 24 Game. The player is presented with four numbers (1-9) on a card. The goal is to manipulate each of the four numbers only once so that the end result is 24. Addition, subtraction, multiplication, division and/or parentheses maybe used and the player must be able to enter the expression using the online calculator.

In this open-ended investigation, students use visualizing skill and work systematically to explore surface area. Learners use linking cubes to build three-dimensional objects with exactly 28 faces exposed. Ideas for implementation, extension and support are included.

In this 7-minute video astronomer Dr Meghan Gray explains the relationship of the Earth's rotation and its revolution around the Sun, resulting in the need to add an extra day to our calendar every four years. She describes additional adjustments required to keep our calendar aligned with the Earth's movements. Dr Gray explains the Julian date and its usefulness.

This lab uses Tracker video analysis software to measure and analyze the center of mass of a system of two pucks during a two-dimensional collision. Students measure the initial and final velocity vector for each puck and calculate the center-of-mass velocity of the system before and after the collision and show that it is constant. Tracker can automatically calculate and mark the center of mass in each frame, so it is easy to see that the center of mass velocity is constant and calculate its value from graphs of center-of-mass variables. The zip file contains the lab handout, a video showing a 2-D collision of pucks, and the Tracker file. The video copyright is Flashmedia. To open the Tracker file, download and run Tracker from http://www.cabrillo.edu/~dbrown/tracker/. Tracker is free. The videos can be used with other video analysis software; however, the handout has screen captures from Tracker and instructions specifically written for Tracker.

This java applet is a simulation that demonstrates scalar waves (such as sound waves) in two dimensions. It demonstrates the wave principles behind slit diffraction, zone plates, and holograms.

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.

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.

This activity helps students develop concepts and language related to position by experimenting with the size and relationships between two circles in a qualitative way. They use terms such as outside, touching and overlapping. The Teachers' Notes page includes suggestions for implementation and discussion questions. Students then can move to a follow-up activity, 3 Rings, cataloged separately.

This web page provides links to resources aligned to the CCSS that guide and support second grade mathematics teaching and learning. Tasks developed by the Mathematics Assessment Resource Service (MARS), Problems of the Month, (POM home page is cataloged separately) and videos of public lessons and number talks developed by the Noyce Foundation are included. The tasks were designed to measure students’ ability to solve non-routine problems, explain and justify their solutions, and promote high level thinking skills. They include the scoring rubric, student responses, and discussion of student understanding and misconceptions. Resources are listed for specific grade 2 standards and are also organized by progression for an alternate search route.

This page hosts a collection of geometric tasks in pdf format that are aligned to the CCSS standards 2.G1 through 2.G3. It also has links to supplementary literature and learning materials.

This page provides examples of 2nd Grade Measurement and Data activities aligned with the Common Core State Standards. A CCSS standard is stated and the possible activities are listed below and linked. All activities are suitable for use in Math Centers, small group, or whole class settings and are designed to elicit a range of responses and provide opportunities for students to communicate their reasoning and mathematical thinking. Instructions for each task are typed in large print and written in child-friendly language to enable students to work on activities independently after a brief introduction to the task. All files for 2nd Grade Measurement and Data Activities listed are in PDF format.

In this physics activity, learners build their own rockets out of film canisters and construction paper. Learners discover how a chemical reaction (from a mix of water and Alka-Seltzer) creates gas pressure to propel the craft. The activity explores the three states of matter and Newtonäóťs Laws of Motion.

This tool allows the user to visualize functions of three variables as diffuse clouds. The "cloud" can be rotated and viewed from different angles. Also, slices of the x=0, y=0, and z=0 plans can be viewed. Plots can be viewed with different colormaps, including red-blue maps to indicate the sign of the function.

This tool allows the user to visualize functions as 3D contour plots that can be grabbed and rotated. Users can adjust resolution and choose filled versus wireframe renderings.

This interactive Flash applet provides a Concentration-type game (called pelmanism in the UK) in which students must discern the properties of three-dimensional solids and their colors in order to match them in pairs. Spheres, cones, prisms and other standard 3-D shapes are hidden face down on cards. Time and number of trials needed to solve are recorded.

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.

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.

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.