Mathematics
Teaching Mathematics to students who are blind or visually impaired is imperative, as with all students. These students are fully capable of succeeding in advanced mathematics with the right materials, tools, and technology. These materials include the Nemeth Code and excellent tactile graphics. Tools and technology include everything from low tech to high tech. A collection of videos shares information on many of these topics.
Index
Webinar
Math Teacher Survival Guide: Teaching math to a student with visual impairment
Tools
Math Concepts
Webinar
Math Teacher Survival Guide: Teaching math to a student with visual impairment
Original webcast date: 10/3/2017
Description: This webinar will help general ed math teachers to understand how the TVI can help them with their VI student (and others). The presenters will share tips, specialized tools and equipment that are available to help math teachers be ready to improvise in the moment to support their students.
PLAY FULL VIDEO 0:58:43
Play By Chapter:
- Math Teacher & TVI Collaboration 20:57
- Elementary Tips 09:00
- Secondary Tips 15:19
- Algebra Aerobics 05:28
- The Pool Noodle 07:59
Register to receive ACVREP or SBEC credit.
Abacus
APH Cranmer Abacus: Prime Factorization
Published on Feb 16, 2010
Susan Osterhaus, Math Consultant for the Texas School for the Blind and Visually Impaired’s Outreach Programs, introduces prime factorization on the APH Cranmer abacus.
- Prime Factorization: Prime Factor, 24 (9:13)
- Prime Factorization: Prime Factor, 420 (7:25)
- Prime Factorization: Prime Factor, 630 (4:44)
See Susan’s article on Prime Factorization on the Abacus at: https://www.pathstoliteracy.org/prime-factorization-on-the-abacus/
See also Sara Larkin’s videos on the abacus.
Calculators
Orion TI-84 Plus
Orion TI-84+ Talking Graphing Calculator Resources (Word document)
This document written by Susan Osterhaus outlines all the current resources for the Orion TI84+ found on this webpage in a single Word document.
TSBVI Coffee Hour: Using the Orion TI-84+ Talking Graphing Calculator
Learn about the Orion TI-84 Plus talking graphing calculator and its benefits for students with visual impairments. Explore features, including interactions using audio, speech, and haptic feedback. Discover the Orbit Research website and how to order new calculators, submit old ones for repair, replace lost accessories, and benefit from support and resources.
A Quick Introduction to the Orion TI-84+ (Word document)
This document written by Susan Osterhaus describes what comes in the box, gives a general orientation to and working with the TI-84+ portion, a general orientation to and working with the Orion portion, a few other important things to know, and resources for learning more about this calculator.
Using the Orion TI-84 Plus in the Classroom – An Introduction
Margaret Edwards teaches the keyboard basics for both the TI-84 Plus portion of the calculator and the Orion (or talking) portion of the calculator and then teaches some basic math calculation concepts to students in the classroom using the Orion TI-84 Plus.
The TI-84 Portion of the Calculator
- Keyboard Basics (22:13)
- Keyboard Practice (3:01)
- More Keyboard Basics (7:11)
- More Keyboard Practice (2:38)
- Even More Keyboard Basics and Practice (Exponents and Pi) (12:58)
The Orion (Talking) Portion of the Calculator
- The Orion Unit (11:07)
- Orion Unit Preferences (14:28)
Orion TI-84 Plus Tutorials on Using the Graphing Portion
Susan Osterhaus gives step-by-step instructions on using the Graphing Portion of the Orion TI-84 Plus calculator.
- Introduction to the TI-84 Plus Graphing Capabilities (4:24)
- Graphing Simple Functions (22:33)
- Plotting Points and Best Fit (11:21)
- Working with Matrices (7:17)
The following Word documents are the scripts for the above videos.
- Orion TI-84+ Graphing Simple Functions and Gathering Information (Word document)
- Orion TI-84+ Plotting Points and the Line of Best Fit (Word document)
- Orion TI-84+ Working with Matrices (Word document)
Using the Orion TI-84 Plus in the Classroom
Susan Osterhaus teaches the Graphing Simple Functions Algebra 1 concepts from the above tutorial to students in the classroom using the Orion TI-84 Plus. Everything works perfectly during the tutorial. In the classroom, students encounter certain difficulties and learn to problem solve.
- Entering a Function (5:27)
- Setting Playback Duration (3:53)
- Reading Graph Screen (1:05)
- Find the Y Value (3:18)
- Finding the Zeros of a Function (12:58)
- Finding the Minimum (7:28)
- Intersection of Two Functions – Part I (8:22)
- Intersection of Two Functions – Part II (8:05)
- Slope of a Linear Equation (4:43)
- Setting the Graph Window (13:42)
Other Videos on the Orion TI-84+ and/or the TI-84+
- Orion TI-84 Plus Talking Graphing Calculator Resources (APH)
- TI-84 YouTube videos (youtube+TI-84+math topic) thousands of videos!
Orion TI-36X Talking Scientific Calculator
Published on February 11, 2010
Susan Osterhaus, Math Consultant for Texas School for the Blind and Visually Impaired Outreach Programs, presents and explains how to use the various included accessories for the Orion TI-36X Talking Scientific Calculator (charger, earphone, manuals).
- Accessories (6:24)
- Features (9:24)
- Basic Arithmetic (8:23)
- Fractions (6:21)
- Simple Algebraic Computations (4:39)
- Usefulness and Affordability (2:42)
Low Tech Math Tools
Compass
Published on Aug 1, 2012
Susan Osterhaus demonstrates the use of various types of compasses on several types of drawing boards.
Compass Use with a Clipboard
- Introduction to a variety of compasses (4:25)
- Drawing print concentric circles (2:38)
- Drawing a print Venn diagram (2:39)
- Teaching tips for drawing print circles (1:26)
Compass Use with a Sewell Raised Line Drawing Board
- Drawing concentric circles with a compasses (5:50)
- Drawing concentric circles with a Perkins Howe Press compass (4:49)
- Drawing tactile circles with other compasses (2:13)
- Drawing tactile circles with Sewell plastic sheets (2:33)
- Drawing a Venn diagram with a Perkins Howe Press compass (4:47)
- Labeling the tactile Venn diagram with a brailler (3:26)
- Constructing a perpendicular bisector of a line segment (5:27)
- Creating and labeling a tactile circle graph with the Perkins Howe Press Compass (7:15)
Compass Use with the APH Draftsman
- Compasses that do and that don’t work with Draftsman (4:25)
- Creating a tactile circle graph with a Fiskars compass (7:38)
- Techniques for labeling a tactile graph (2:55)
Compass Use with less expensive and alternative drawing boards and tools
Graph Board (APH Graphic Aid for Mathematics)
Published on Feb 4, 2010
Susan Osterhaus describes the APH Graphic Aid for Mathematics and demonstrates how it can be used for graphing algebraic and geometric concepts.
- An Introduction (9:00)
- Plotting points on the coordinate plane (8:09)
- Graphing a straight line (5:42)
- Graphing an inequality (6:05)
- Graphing a system of linear equations (7:12)
- Graphing a system of inequalities using the boundary lines (7:12)
- Graphing a quadratic (parabola) (7:43)
- Graphing a circle on the coordinate plane (6:23)
- Closing thoughts on graphing (1:27)
Protractors (APH Braille Print Protractor)
Published on Feb 10, 2010
Susan Osterhaus describes the APH Braille Print Protractor and how it can be used to draw and measure angles.
- Introduction of a protractor and the APH Braille Print Protractor (3:48)
- Features (8:25)
- How to use one in a textbook with binding (3:14)
- A Teacher’s Guide (3:52)
- See also the Braille/Large Print Protractor Teacher’s Guide.
- Drawing a print 90° angle (5:48)
- Drawing a print 70° angle and its supplement (6:24)
- Technique for drawing a very small print angle (6:24)
- Drawing 90° and 70° tactile angles on the Sewell Raised Line Drawing Board (4:30)
- Labeling tactile angles made with the Sewell Raised Line Drawing Board (2:56)
- Technique for drawing a very small tactile angle (5:09)
- Drawing tactile angles on the APH Draftsman, 90°, 70°, and 110° angles (4:22)
- Labeling tactile angles drawn on the APH Draftsman (6:50)
- Measuring the Angles of 2-D Manipulatives (7:19)
- Measuring Angles from the APH Geometry Tactile Graphics Kit (5:17)
- Measuring Tactile Angles on Various Types of Paper (5:08)
Math Stencils
Published on Aug 2, 2012
Susan Osterhaus demonstrates the use of math stencils to draw geometric figures on various drawing boards.
- Using math stencils to draw print and tactile geometric figures (5:05)
- Using Math Stencils and the APH Draftsman to draw tactile geometric figures (5:57)
Nets and Platonic Solids
Published on Aug 2, 2012 – Susan Osterhaus demonstrates how to create nets of and build platonic solids. Each of these nets is a pattern that you can form and fold into one of the three-dimensional platonic solids: tetrahedron, octahedron, cube, dodecahedron, and icosahedron.
- Creating a net using swell touch paper (5:25)
- Cutting out the net and building it into a 3D object with swell touch paper (3:23)
- Creating a net and building a 3D object with braille paper (2:08)
- Cutting out the octahedron net and building it into a 3D object using braille paper (3:29)
- Creating a tetrahedron net with Geometro manipulative (3:45)
- Creating more of the platonic solids with Geometro manipulatives (5:31)
- Creating a cube with a Geometro manipulative (4:47)
Nemeth Code
Publications and Reference Sheets
Published on Aug 2, 2012
Texas School for the Blind and Visually Impaired Outreach Math Consultant Susan Osterhaus shares information about publications and reference sheets for the Nemeth code.
- Introduction to Dr. Abraham Nemeth (1:18)
- The Nemeth Braille Code for Mathematics and Scientific Notation (3:20)
- An Introduction to Braille Mathematics (3:33)
- Learning the Nemeth Braille Code (5:49)
- Nemeth Code Reference Sheets: Common Nemeth Symbols by Gloria Buntrock (6:29)
- Nemeth Code Reference Sheets: Nemeth Reference Chart by Thora Dumont and Janet Malone (6:06)
- Nemeth Code Reference Sheets: Algebra I, Geometry, Algebra II Reference Sheets by Gloria Bennett and Susan Osterhaus (6:25)
Frequently Asked Questions about Nemeth Code
Published in February 2014
- Part 1 – In Video 1 of this informational series, Susan Osterhaus addresses the question of when children should start learning the Nemeth code and directs individuals to an early childhood resource. (1:09)
- Part 2 – In Video 2 of this informational series, Susan Osterhaus presents resources for learning the Nemeth code and producing materials in the Nemeth code. The majority of the specific resources mentioned are available both in print and in Braille on federal quota money or are free and available for downloading. (4:47)
- Part 3 – In Video 3 of this informational series, Susan Osterhaus shares three common mistakes learners make when using the Nemeth code. (0:59)
- Part 4 – In video 4 of this informational series, Susan Osterhaus provides background information on Dr. Abraham Nemeth, the creator of the Nemeth code. (1:50)
Math Concepts
Multiplication of Polynomials
Description: A video for regular education teachers that demonstrates teaching
the multiplication of polynomials to a student who is blind or visually impaired; strategies, tools, and materials.
Sample video created for International Council for Education of People with Visual Impairment (ICEVI).
PLAY FULL VIDEO 0:09:03
Downloads: | Transcript (txt) | Audio (mp3) |
Parallel Lines
Description: A video for regular education teachers that demonstrates teaching parallel lines to a student who is blind or visually impaired; strategies, tools, and materials.
Sample video created for International Council for Education of People with Visual Impairment (ICEVI).
PLAY FULL VIDEO 0:08:45
Downloads: | Transcript (txt) | Audio (mp3) |
Perpendicular Lines
Description: A video for regular education teachers that demonstrates teaching perpendicular lines to a student who is blind or visually impaired; strategies, tools, and materials.
Sample video created for International Council for Education of People with Visual Impairment (ICEVI).
PLAY FULL VIDEO 0:08:59
Downloads: | Transcript (txt) | Audio (mp3) |
Skew Lines
Description: A video for regular education teachers that demonstrates teaching skew lines to a student who is blind or visually impaired; strategies, tools, and materials.
Sample video created for International Council for Education of People with Visual Impairment (ICEVI).
PLAY FULL VIDEO 0:06:45
Downloads: | Transcript (txt) | Audio (mp3) |