Search Resources

363 Results

View
Selected filters:
  • Math
100 Free Web Tools for Elementary Teachers
Conditional Remix & Share Permitted
CC BY-SA
Rating

This article includes the URL and description of 100 free web tools that can be used by all teachers. The tools are categorized into search engines, math and science, games, templates and lesson plans, and more.

Subject:
Education
Material Type:
Reading
Provider:
Ohio State University College of Education and Human Ecology
Provider Set:
Beyond Penguins and Polar Bears: An Online Magazine for K-5 Teachers
Author:
John Costilla
Date Added:
10/17/2014
30-60-90 triangle
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the properties of a 30-60-90 triangle. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's angles remain 30 degrees, 60 degrees and 90 degrees The text on the page points out that the sides of a 30-60-90 triangle are always in the ratio of 1 : 2 : root 3 Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
3:4:5 triangle
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the properties of a 3:4:5 triangle - one of the Pythagorean triples. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's side remain in the ration 3:4:5. The text on the page has an example of how the triangle can be used to measure a right angle on even large objects. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
45-45-90 triangle
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the properties of a 45-45-90 isosceles right triangle. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's angles remain 45 degrees, 45 degrees and 90 degrees The text on the page points out that the sides of a 45-45-90 triangle are always in the ratio of 1 : 2 : root 2 Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
5.NF.5 Understanding Multiplication as Scaling
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

This resource includes a flawed reasoning task that reflects 5.NF.5. Students must find the flaw in an argument and present it correctly. Then, they should provide a reasoning behind their thinking.

Subject:
Education
Mathematics
Material Type:
Assessment
Homework/Assignment
Author:
MSDE Admin
Michele Lerner
Whitney Plunkett
Date Added:
09/14/2018
5 Pythagorean Solids
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

This OER explores the basic organization of the Pythagorean Solids. It contains both an activity as well as resources for further exploration. It is a product of the OU Academy of the Lynx, developed in conjunction with the Galileo's World Exhibition at the University of Oklahoma.

Subject:
Arts and Humanities
History
Mathematics
Material Type:
Activity/Lab
Diagram/Illustration
Homework/Assignment
Lecture Notes
Primary Source
Student Guide
Author:
Brent Purkaple
Kerry Magruder
Date Added:
01/28/2016
5.c.4-1 Multi-Step Fraction Word Problems
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

This resource includes two multi-step tasks where students connect diagrams and equations in order to solve real world problems. This task includes skills learned in the common core standard 5.NF.2

Subject:
Mathematics
Material Type:
Activity/Lab
Author:
MSDE Admin
Whitney Plunkett
Date Added:
09/24/2018
7 Step Directions Pre-K Sample Lesson
Only Sharing Permitted
CC BY-NC-ND
Rating

Along with the Pre-K Lesson using the 7 Step Directions tool for Math is the example of the Hand Signals tools used in the First Grade Speedy Feedback Lesson.

Subject:
Education
Material Type:
Lesson
Author:
Elizabeth Privitera
Date Added:
06/06/2019
AAA Doesn't work
Read the Fine Print
Rating

An interactive applet and associated web page that shows that angle-angle-angle (AAA) is not enough to prove congruence. The applet shows two triangles, one of which can be dragged to resize it, showing that although they have the same angles they are not the same size and thus not congruent. The web page describes all this and has links to other related pages. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
AAA Triangle similarity test
Read the Fine Print
Rating

An interactive applet and associated web page showing how the AAA similarity test works. Two similar triangles are shown that can be resized by dragging. The other triangle adjusts to remain similar and the angle-angle-angle elements are highlighted to show how they are involved in this test of similarity. (all three interior angles congruent). The web page describes all this and has links to other related pages. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference interactive geometry reference book project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
AAS Congruent Triangles
Read the Fine Print
Rating

An interactive applet and associated web page that shows how triangles that have two angles and a non-included side the same must be congruent. The applet shows two triangles, one of which can be reshaped by dragging any vertex. The other changes to remain congruent to it and the two angles and non-included side are outlined in bold to show they are the same measure and are the elements being used to prove congruence. The web page describes all this and has links to other related pages. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
ACME
Restricted Use
Copyright Restricted
Rating

El projecte d'Avaluació Continuada i Millora de l'Ensenyament (ACME), de l'Escola Politècnica Superior de la Universitat de Girona, permet la correcció totalment automàtica d'una gran varietat d'exercicis no trivials parametritzats.

Material Type:
Assessment
Interactive
Provider:
CIRAX
Provider Set:
Fonaments de matemàtiques
Author:
Ferran Prados Carrasco
Jordi Poch García
Josep Soler Masó
UdG, Universitat de Girona
Date Added:
06/26/2013
A+ Click K-12 Math Test
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

A+ Click is an interactive collection of more than 3700 math problems and answers for K-1 K-12 school program. It defines the personal level of math knowledge. You move up into the next level if you give 5 correct answers in a row. Practice makes perfect.

Subject:
Mathematics
Algebra
Geometry
Material Type:
Activity/Lab
Assessment
Game
Lecture Notes
Provider:
NSDL Staff
Provider Set:
Mathematics Gateways and Resources
Author:
Igor Kokcharov
Date Added:
02/16/2011
ASA Congruent Triangles
Read the Fine Print
Rating

An interactive applet and associated web page that shows how triangles that have two angles and their included side the same must be congruent. The applet shows two triangles, one of which can be reshaped by dragging any vertex. The other changes to remain congruent to it and the two angles and the included side are outlined in bold to show they are the same measure and are the elements being used to prove congruence. The web page describes all this and has links to other related pages. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Across the MOAT (Mountains, Obstacles, Aerial, Terrain)
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

How can you use the Engineering Design Process to access a geographically inaccessible location to deliver supplies?

Subject:
Architecture and Design
Engineering
Material Type:
Activity/Lab
Assessment
Lesson
Lesson Plan
Student Guide
Author:
Joshua Beals
David Fordoski
Douglas Kase
Megan Altebrando
Carol Heath
Date Added:
02/28/2019
Acute Angle
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate acute angles (those less than 90 deg). The applet presents an angle (initially acute) that the user can adjust by dragging the end points of the line segments forming the angle. As it changes it shows the angle measure and a message that indicate which type of angle it is. There a software 'detents' that make it easy capture exact angles such as 90 degrees and 180 degrees The message and angle measures can be turned off to facilitate classroom discussion. The text on the page has links to other pages defining each angle type in depth. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Acute triangle
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the three types of triangle: acute, obtuse and right. The applet shows a triangle that is initially acute (all angles less then 90 degrees) which the user can reshape by dragging any vertex. There is a message changes in real time while the triangle is being dragged that tells if the triangle is an acute, right or obtuse triangle and gives the reason why. By experimenting with the triangle student can develop an intuitive sense of the difference between these three classes of triangle. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Adding Fractions
Conditional Remix & Share Permitted
CC BY-NC
Rating

Students will review and practice the concepts of adding fractions. This is a great tool to use for extra practice or review for a test.

Subject:
Mathematics
Material Type:
Activity/Lab
Author:
Joe Ferguson
Date Added:
06/09/2017
Adding and Subtracting Mixed Numbers Using a Number Line
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

This resource includes three tasks surrounding the Common Core Standard 5.NF.2 - Adding and Subtracting Mixed Numbers with Unlike Denominators Using an Open Number Line and Fraction Equivalence. The tasks involves looking at real Maryland snowstorm data and each task builds off the previous task.

Subject:
Education
Mathematics
Material Type:
Assessment
Homework/Assignment
Author:
Michele Lerner
Whitney Plunkett
Date Added:
07/18/2018
Addition Worksheet  | Customizable & Printable
Read the Fine Print
Rating

A randomly generated, vertical format, worksheet that is customized to your needs. Each sheet can contain between 1 and 30 problems with 2 to 5 addends each. Each addend can have 1 to 7 digits.

Material Type:
Homework/Assignment
Date Added:
05/21/2014
Adjacent Angles
Read the Fine Print
Rating

An interactive applet and associated web page that show the concept of adjacent angles (two angles that share a common leg). The applet shows three line segments with a common endpoint. The user can move the center one and see that the angles on both sides (the adjacent angles) of it are affected. Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, students can access it again from any web browser at home or in the library with no login required. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Adjacent arcs
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the the concept of adjacent arcs. The user can 3 drag points around a circle that define the endpoints of two adjacent arcs. Web page has the properties of adjacent arcs. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Adriana & Taneal Kindergarten Addition Lesson
Only Sharing Permitted
CC BY-NC-ND
Rating

Lesson Plan Date:                                 Grade Level: Kindergarten  Concept: Addition Objectives:Condition: The students will use manipulatives such as blocks to add by grouping. Behavioral Verb: The students will be able to identify addition problems by using counting blocks. Criteria:The students will have to complete 3 addition problems correctly before moving on.  Introduction: We will use real-world applications to engage the children in the lesson. The students know their numbers they are going to use their prior knowledge to group the manipulatives together to make addition problems and solve them.  Vocabulary:Addition, numbers, objects, counting, sorting, identifying, sequence, groups, biggest, smallest, more than, and less than A:Body of Lesson:The students are going to learn how to add groups by having a set of blocks that are split into two or three part with a certain number of blocks in each group.They then are going to put two or more groups of blocks together to see how many blocks there is all together.  A:Accommodations/Modifications: There will be ample time for each student to complete their work. The teacher (I) will be going around to help the children if they do not understand the lesson.  A:Multiple Intelligence(s) Addressed:A verbal explanation of the lesson along with hands on, visual, and practiced work. For visual learners there will be flashcards they are able to look at, for the kinesthetic learners there will be the objects that they can physically touch. For auditory learners there will be the directions and instructions of the activity.  Assessment: We will be using pre-assessments to see what the students know before we talk about the new topic, then we will use summative assessment to see what they learned after the lesson.  Materials: The students will be using flashcards to physically see the addition problem then they will use objects to put together to get the answer.   Standards:MA 0.2 ALGEBRA: Students will communicate algebraic concepts using multiple representations to reason, solve problems, and make connections within mathematics and across disciplines. MA 0.2.1 Algebraic Relationships: Students will demonstrate, represent, and show relationships with expressions and equations. MA 0.2.1.a Decompose numbers less than or equal to 10 into pairs in more than one way, showing each decomposition with a model, drawing, or equation (e.g., 7 = 4 + 3 and 7 = 1 + 6). MA 0.2.1.b For any number from 1 to 9, find the number that makes 10 when added to the given number, showing the answer with a model, drawing, or equation. MA 0.2.2 Algebraic Processes: Students will apply the operational properties when adding and subtracting. MA 0.2.3 Applications: Students will solve real-world problems involving addition and subtraction. MA 0.2.3.a Solve real-world problems that involve addition and subtraction within 10 (e.g., by using objects, drawings or equations to represent the problem).         

Subject:
Numbers and Operations
Material Type:
Lesson Plan
Author:
Adriana Trent
Date Added:
01/22/2018
Algebra2go: Digits and Place Value
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

Professor Perez and his favorite student Charlie have the tools that can help you. We have five primary types of study materials: class notes, video worksheets, video lectures, practice problems, and practice quizzes.

Subject:
Algebra
Numbers and Operations
Material Type:
Homework/Assignment
Lecture
Lecture Notes
Provider:
Saddleback College
Provider Set:
Individual Authors
Author:
Candice Harrington
Larry Perez
Patrick Quigley
Date Added:
04/19/2013
All Natural: Jim Denevan and Chris Drury
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

SPARK tails artists Jim Denevan and Cris Drury as they create large earth works. This Educator Guide is about the history and tradition of artists making work in and about the natural environment.

Subject:
Arts and Humanities
Material Type:
Lesson Plan
Provider:
KQED Education
Provider Set:
KQED Education Network
Date Added:
05/18/2005
Alternate Exterior Angles
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the alternate exterior angles that are formed where a transversal crosses two lines. The applets shows the two possible pairs of angles alternating when in animation mode. By dragging the three lines, it can be seen that the angles are congruent only when the lines are parallel. When not in animated mode, there is a button that alternates the two pairs of angles. The text on the page discusses the properties of the angle pairs both in the parallel and non-parallel cases. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Alternate Interior Angles
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the alternate interior angles that are formed where a transversal crosses two lines. The applets shows the two possible pairs of angles alternating when in animation mode. By dragging the three lines, it can be seen that the angles are congruent only when the lines are parallel. When not in animated mode, there is a button that alternates the two pairs of angles. The text on the page discusses the properties of the angle pairs both in the parallel and non-parallel cases. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Analyzing and Making Mathematical and Historical Claims from (Linear) Data Representations
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating

A statistics lesson on describing and making claims from data representations, specifically linearly increasing data. Applies ideas of rate-of-change to develop writing a linear equation to fit the data, using the equation to interpolate and extrapolate additional information, and integrating the mathematical interpretation appropriately into a social sciences argument.

Subject:
Mathematics
Material Type:
Lesson Plan
Author:
Sarah Ahmed
Johanna Langill
Date Added:
01/28/2016
Angle
Read the Fine Print
Rating

An interactive applet and associated web page that introduce the concept of an angle. An angle made from two line segments is shown that the user can adjust by dragging the end points of the segments. In real time, as the angles is changed by the user, the angle measure in degrees is shown and a message telling what type of angle it currently is: acute, right, obtuse, reflex or straight. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011
Angle bisector
Read the Fine Print
Rating

An interactive applet and associated web page that demonstrate the bisector of an angle. An angle is shown using two line segments that can be dragged to change the angle measure. The angle is bisected by a line which moves while dragging to always divide the angle into two equal angles. The angle measures can be turned off for class discussions. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Subject:
Geometry
Material Type:
Reading
Simulation
Provider:
Math Open Reference
Author:
John Page
Date Added:
02/16/2011