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.

In this 15 minute video, Mary Holden and her 4th/5th grade class reason about the appropriateness of different computational methods (base-ten blocks, calculators, mental math, or paper and pencil) to specific problems. The video includes a description of how the teacher manages her multi-level class and encourages hands on exploration and discussion in small group learning sessions. At the conclusion of the video are reflection questions for professional development.

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 half-hour video includes 18 classroom excerpts from classroom lessons which show students representing, discussing, reading, writing, and listening as vital parts of learning and using mathematics. It shows how communication that arises naturally from rich tasks and experiences fosters understanding of mathematical concepts and development of mathematical language.

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 24-min video includes 16 classroom vignettes that illustrate the central role of reasoning in mathematics. Students use a variety of models and strategies; they explain and justify their thinking and solutions. Teachers emphasize the importance of reasoning in the problem solving process.

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.

This resource is a collection of essays and materials designed to help AP Biology teachers understand the important role of evolution in a schoolí˘ŒóŒťs curriculum. These essays touch on a few topics from the life story of founding father, Charles Darwin; the historical process of the U.S. legal system and its influence on the teachings of evolution in classrooms; to the impact of evolutionary developmental biology on understanding the formulation of nature and its mechanisms for the world. These authors provide teachers with access to literature and internet links to a variety of sources that will promote the exploration of evolution in classrooms.

A collection of experiments and demonstrations presented by biology teachers addressing some of the most difficult-to-understand topics in the AP biology curriculum which include evolutionary traits, genetics, bacterial transformation, antibody diversity, comparative anatomy, photosynthesis, human genetics, protein synthesis, recombinant DNA and RNA polymerase.

This guide is for teachers to engage students in various inquiry-based experiments and activities on the origins, chemical makeup, processes and regulations of DNA from the Advanced Placement Biology curriculum. It allows students to answer the question of how DNA is indeed the molecule of heredity as they trace the course from gene to protein from a historical perspective.

This is a collection of essays that highlights the benefits of conducting lab experiments as part of the AP Biology curriculum. It encourages teachers to continue using learning tools like technology in lab experiments to enhance the classroom experience for students.

Using simple materials like tennis balls and bubble wrap, students will understand the change in the architecture of the vertebrate brain over the course of evolution and how the arrangements of the pigments in the photosystems work to relay photons of light to the reaction center chlorophyll.

How to use Tangle Toys to represent plasmids, inserts or the different levels of protein structure.

Teachers will be given examples of ways to present the idea of evolutionary theory, in particular, exaptation, and how primates developed three adaptable characteristics which led to opposable thumbs, a superior brain and binocular vision.

Through this demonstration, teachers will be able to use simple materials to explain bacterial transformation using restriction endonuclease.

In this experiment, students will calculate the number of different antibody molecules made through gene splicing and how it leads to antibody diversity.

Three lab experiments that use balloons to demonstrate the concepts of antibody specificity, the agglutination aispersal of viruses from a cell and genetic ratios.

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.

The complete Abraham Lincoln Papers at the Library of Congress consists of approximately 20,000 documents. The collection is organized into three "General Correspondence" series which include incoming and outgoing correspondence and enclosures, drafts of speeches, and notes and printed material. Most of the 20,000 items are from the 1850s through Lincoln's presidential years, 1860-65. Treasures include Lincoln's draft of the Emancipation Proclamation, his March 4, 1865, draft of his second Inaugural Address, and his August 23, 1864, memorandum expressing his expectation of being defeated for re-election in the upcoming presidential contest. The Lincoln Papers are characterized by a large number of correspondents, including friends and associates from Lincoln's Springfield days, well-known political figures and reformers, and local people and organizations writing to their president. In its online presentation, the Abraham Lincoln Papers comprises approximately 61,000 images and 10,000 transcriptions

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.

This website emphasizes the strength of active learning, in which students solve problems on their own, and cooperative learning, in which students work in teams on problems under conditions that assure both positive interdependence and individual accountability, over a teacher-centered approach. It provides a list of the work of Dr. R.M. Felder, who has published extensively on this subject, as well as links to related online resources.

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.

How to use a different approach to teaching biological concepts using inquiry-based investigations for students to develop reasoning skills essential to the science practices used throughout their study of biology. A more student-directed, inquiry-based lab experience supports the AP Biology course revision and curricular requirements by providing opportunities for students to design plans for experiments, data collection, application of mathematical routines, and refinement of testable explanations and predictions. The investigations are organized under four big ideas entitled: (1) evolution, cellular processes; (2) energy and communication; (3) genetics and information transfer; and (4) interactions.

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

This 1-minute video created by the UK Department of Education as an algebra lesson starter is based around how many friends can sit at a birthday party table. The video shows the birthday boy and girl sitting at opposite ends of the table with their guests sitting two on either side. As more tables are added and the number of children grow, a pattern starts to appear. Children are asked to predict how many children could come to the party if there were 100 tables.

This 3-minute video created by UK Department of Education as a math lesson starter on algebra, presents a story of a cold apple seller who can't afford a scarf and manages to exchange some apples for a scarf. The scarf seller then goes and exchanges some of her scarves for a coat. The story finishes by asking students to work out the formula for how many apples will be needed to get a coat.

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.

In this 14-min video British teacher Rosalind Caren demonstrates group activities designed to develop number sense, fluency with addition and subtraction fact families, and reasoning skills. Caren exhibits effective questioning techniques and routines. Headteacher/math coordinator Kate Frood describes the guiding principles and expectations of teaching at the school. Following a class observation Frood provides constructive feedback to Caren and her teaching assistants.

The purpose of this resource is to observe when selected bird species first arrive at your study site, and to count the numbers until few or none of these birds are seen. Students select a common and easily identifiable bird species in their region and observe when the bird species first arrives. Students use binoculars or telescopes to scan a study site and count how many they see. They continue to observe every other day until few or none of the selected species can be seen.

This example Socratic questioning page provides an outline for leading a classroom discussion regarding whether or not nanobacteria exist. Sample questions, resources for background information, and tips and assessment information are provided.

This example Socratic questioning page provides an outline for leading a classroom discussion regarding whether or not viruses are alive. Sample questions, resources for background information, and tips and assessment information are provided.