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.

Advising guidelines put together at the University of Arkansas as the undergraduate program grew and developed. Presented at the 2012 SPIN-UP conference in Austin and the PhysTEC leadership meeting at the AAPT summer meeting in Edmonton.

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 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 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 web page provides links to resources aligned to the CCSS that guide and support third 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 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 3 standards and are also organized by progression for an alternate search route.

This web page provides links to resources aligned to the CCSS that guide and support fourth grade mathematics teaching and learning. Tasks developed by the Mathematics Assessment Resource Service (MARS) for the Noyce Foundation, Problems of the Month, (POM home page is cataloged separately) and videos of public lessons and number talks developed by the Noyce Foundation are also included. The performance tasks were originally designed to measure students' ability to solve non-routine problems and then to explain and justify their solutions. The task scoring rubric, student responses, and discussion of student understanding and misconceptions are provided to improve instruction. Resources are listed for specific grade 4 standards and are also organized by progression for an alternate search route.

This web page provides links to resources aligned to the CCSS that guide and support fifth 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 5 standards and are also organized by progression for an alternate search route.

This classroom activity will show students that there is a lot we don't know about science, for example life throughout the universe. It will hopefully encourage students to question what we know and don't know, and exploration and study of the unknown.

In this lab, students use BLAST (Basic Local Alignment Search Tool) to compare several genes, and then use the information to construct a cladogram (also called a phylogenetic tree) to depict the evolutionary relatedness of species.

This web page presents information about using math templates during instruction to keep each student actively involved and to allow the teacher to informally assess each student's proficiency with the skills and concepts addressed throughout the lesson. The web page provides suggestions for using templates and explanations for why templates should be used. There is a link to the template library, which includes available templates (in PDF format) for the following categories: Number and Operation, Patterns and Algebra, Geometry and Measurement, Data Analysis and Probability, Discrete Math and Logic and Problem Solving.

Selected resources provide three web-based activities to complement science lessons in an issue of Beyond Weather and the Water Cycle. The free, online magazine for Grades K-5 teachers explores the essential principles of climate literacy.

This resource from the National Library of Virtual Manipulatives shows students how to rename fractions to have a common denominator and then add them. It is appealing because it visually engages the students by showing them what happens to a unit (a rectangle is used here) as the denominator increases or decreases. As the denominator increases or decreases, the partitions are shown accordingly, and the effect on the numerator is shown as well. This is a convenient, visual way to show students how to manipulate fractions for adding.

Kahn Academy video - How to add and subtract fractions with like and unlike denominators.

Dear colleagues
We would like to submit our Journal "Advances in Biology & Earth Sciences"
ISSN 2519-8033
to NSDL
Thank you in advance.

Sincerely
Farzali Aghamaliyev
Editor in-Chief

In this informational text, elementary school readers learn about the difference between weather and climate and about components of the climate system. The text can be used to practice visualizing and other comprehension strategies. Available in K-2 and 3-5 grade bands and as an illustrated book as well as a text document, the story appears in the online magazine Beyond Weather and the Water Cycle.

This 8-page monograph offers strategies for effective questioning that engages students and that deepens their conceptual understanding in mathematics. It suggests questions and prompts that help students progress through various stages of the problem solving process and that help teachers assess the thinking of students. The article describes the purposes of questions at different stages of a lesson and describes situations when it is appropriate to convey information to students. A list of references is included.

The ability to ask and answer questions while reading is essential to comprehension. This article discusses instructional strategies used to teach questioning and provides many online resources. The article appears in the free, online magazine Beyond Weather and the Water Cycle, which explores the seven essential principles of the climate sciences for teachers in k-grade 5 classrooms.

Khan Academy video tutorial with practice exercises. Introduction to averages and algebra problems involving averages.