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Measurement & Data Collection

By: Carmen Willings
teachingvisuallyimpaired.com

There are many materials available to make measurement, probability and data collection activities accessible to students who are blind or visually impaired. Using real objects and materials can make the experiences more concrete for the student.
Graphing is an great math activity that allows students to relate to numbers both tactually and visually. Graphs can show at a glace what could otherwise take paragraphs to describe. Graphs are also an excellent way to help students relate math to their personal experiences. Have students gather and sort data in response to questions posed (taste test or other comparison charts). Arrange objects in a graph according to attributes,(size, color, shape, etc). Encourage students to read the charts and graphs. When complete, identify category that has the most/fewest in a graph. Identify untrue or inappropriate statements about given data. Create and use charts, graphs, tables to interpret and analyze information and to locate information (e.g. sale prices, sales tax, nutritional information, etc) Depending on the students need for concrete understanding, create graphs using real objects, pictures/tactual graphics, or abstract (using print or tactual X's, circles, etc. for students functioning at a more abstract level).

Accessible Measurement Materials

Picture of Orion Talking Scientific Calculator.
Students in middle school following the standard course of study will need to use a scientific calculator. The Orion TI-36X Talking Scientific Calculator, available through APH, has identical functions to the Texas Instruments TI-36X calculator.

Large print/Large display calculators are available for students with low vision from other vendors. These calculators are sometimes paired with speech output. When selecting a calculator, remember the students need to first gain an understanding of numbers and how to perform operations, older students will be required to use calculators as they enter middle school and perform complex operations.

Picture of braille ruler.
This 1-foot braille ruler is tapered on the edge. A metal caliper slide aids in accuracy. The English measurement ruler has raised lines with braille numbers at each inch. Fourths on one edge, eighths on the other.

Picture of analog tactile clock model from APH
The Analog Clock Model ​from APH helps teach about time-telling concepts. It has braille and raised large print markings and hands that are easily rotated. The hands are synchronized like those of an actual clock.

Picture of SAVI/SELPH balance.
​Balance, SAVI/SELPH and FOSS is a specially modified balance includes a tactile indicator and holes in the balance pans, allowing use of removable plastic cups. Students use gram pieces and mass sets for weighing.

Picture of braille/large print yardstick.
The Braille or Large Print Yardstick has raised-line markings along one edge in1/4" increments, with braille marking every inch.

Picture of braille meter stick.
The Braille Meterstick has raised lines every centimeter, and braille every other centimeter; and thick raised lines for decimeters.

Picture of APH classroom calendar.
The whole class cab use this large print and braille Classroom Calendar from APH. Unlike many commercially available calendars that are visually cluttered, this calendar is simple and provides uncluttered, high contrast numbers and labels. It is accessible to students with low vision as well as those who are blind. It includes brightly colored and embossed holiday and weather symbols.

Picture of desktop stick-on number line.
This Desktop Stick-On Number Line ​available from APH provides both large print and braille. The self-adhesive number line can be reapplied approximately five times.

Picture of clock face sheets in braille.
Clock Face Sheets in Braille are available from APH. Each sheet contains four embossed braille clock faces. The clock faces are blank allowing you to add the hands.

Picture of electronic learning clock.
Electronic Learning Clock teaches kids to tell time and solve elapsed time problems. The self-checking quiz feature has two skill levels to make mastering time telling easy! Clock measures 10 3/4" high. The 32-page Clever Clock Workbook includes 26 time-learning activities that can be used with any learning clock.

Picture of Fraction Line from Slide-a-Round.
This Fraction Line, available from Slide-A-Round Math Manipulatives, was developed by Jim Franklin who is a special education teacher. This fraction number line is accessible to students with low vision as well as those who are blind.

Picture of individual calendar kit.
The Individual Calendar Kit from APH allows students to create their own individual calendars. The kit includes twelve brightly colored embossed/bold line grid sheets with paper labels for months, days of the week and days of the month. Labels are in large print and braille.

Picture of large print/braille toss away ruler.
Large Print or Braille Toss Away Ruler has markings both in large print and braille and is designed for the classroom or testing and assessment situations where an inexpensive measuring device is needed.

Picture of Math Builders Unit 5.
Math Builders Unit 5: Measurement and Estimation is a supplementary math program. It includes a teacher's guide with lesson plans specific to geometry standards.

Picture of Math Builders Unit 8.
Math Builders Unit 8: Data Collection, Graphing, and Probability/Statistics is a supplementary math program. It includes a teacher's guide with lesson plans specific to geometry standards.

Picture of SAVI/SELPH thermometer.
The SAVI/ SELPH thermometer includes both a Braille and large print scale for measuring temperature in degrees Celsius. It is introduced in the SAVI/SELPH Measurement Module to measure the temperature of water. The thermometer can be calibrated. Tabs are included along the rim to mark temperatures for comparison.

Sight Enhancement Systems, Ottawa, Canada, offers next generation SciPlus scientific calculators designed specifically for persons who are visually impaired.  These new models improve on the popular SciPlus family, incorporating a larger, 4-line backlit graphical LCD display with inverted white/black function and adjustable contrast.  The SciPlus-2200 version is the “non-speaking” model, and the SciPlus-2300 has English/Spanish (selectable) audio output, with additional languages coming soon.
Picture of tactile demonstration thermometer.
The Tactile Demonstration Thermometer ​from APH allows students to independently read, set, and compare temperatures. It consists of a two textured, two-colored adjustable "mercury column" with an easy-grip tactile indicator. The comparable Fahrenheit and Celsius scales are in large print and braille.

Picture of talking tape measure.
Talking Tape Measures announce the measured length.

Picture
Textured Sorting Circles and Shapes ​includes shapes in a variety of textures, sizes, and colors. The accompanying sorting circles are also provided in a variety or colors and textures, and can be used to create Venn diagrams.

Picture of time line Slide-a-round.
This Time Line, available from Slide-A-Round Math Manipulatives, was developed by Jim Franklin who is a special education teacher. This number line is accessible to students with low vision as well as those who are blind.

Picture of transparent CCTV rulers.
Transparent CCTV Rulers ​are flexible, see-through vinyl rulers that make it easier to measure items magnified by an electronic magnifier. Rulers are scree printed with black ink on high-contrast transparent vinyl.

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The mission of Teaching Students with Visual Impairments is to provide all persons involved in education students who are blind or visually impaired with the necessary resources to help each student become successful members of their communities and to equip those in the visual impairment field with resources to meet the wide range of needs of the students they serve. ​
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      • Presentation Complete Set of 16
      • Foundations of Teaching the ECC
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      • Strategies & Activities for Standard Course of Study
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      • Accessible Content for BLVI
      • Using Themes to Teach the ECC
      • Tips for Being a Physically Fit TVI
      • Conducting a FVLMA
      • Developing SMARTER Goals
      • Determining Service Intensity Using the VISSIT
      • Selecting the Right AT
      • The Art of Teaching the ECC
      • Activities to Teach the ECC
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