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Measurement is the process of finding a unit (often a number) that tells something about an object or event. We can measure distance, size, weight, volume, temperature, and much more — and there are lots of fun accessible tools to help us!


Measuring with standard units means measuring with inches, feet, yards, centimeters, meters, pounds, grams, cups, pints, etc., using rulers, scales, and other standardized measuring devices.

Measuring with non-standard units means measuring with blocks, paperclips, feet, bottle caps, etc. Whatever items are used, they must all be the same size.

Accessible Rulers, Calipers, and Tape Measures


The Tactile Caliper is a simple to use, accurate, low-cost measuring ruler for the blind and visually impaired that provides a braille output to 1/16th of an inch.

the tactile caliper


5-Foot Nylon Tape marked with sturdy metal buttons from the Braille SuperStore is great for kids.

5 foot nylon tape


Flexible Plastic Meter Tape from SAVI/SELPH includes large print and braille numbers.

The flexible plastic meter tape


Accessible Measuring Cups, Spoons, and Beakers


MEASURE UP! Cups by Discovery Toys are 12 cups that are volumetrically correct and sequentially sized and numbered (e.g., 1 cup + 2 cup = 3 cup).

MEASURE UP! Cups


These SAVI/SELPH beakers, graduated cylinders, syringes, and volume measurement tools are great additions for the science classroom.

SAVI/SELPH beakers, graduated cylinders, syringes, and volume measurement tools


Accessible Clocks and Calendars


The Analog Clock Model from APH helps you learn about time-telling concepts. It has braille and raised large print markings and hands that are synchronized and easily rotated.

The Analog Clock Model


Each APH Clock Face Sheet has four embossed braille clock faces to which clock hands can be added.

APH Clock Face Sheet


Create your own calendar with the APH Individual Calendar Kit!

APH Individual Calendar Kit


Accessible Scales


The Moshi Glass Talking Scale gives voice announcements of the amount measured.

The Moshi Glass Talking Scale


This talking kitchen scale is great fun for all ages!

talking kitchen scale


Accessible Thermometers


The SAVI/SELPH thermometer includes both braille and large print scales for measuring temperature in degrees Celsius. Tabs are included along the rim to mark temperatures for comparison.

SAVI/SELPH thermometer


With the Tactile Demonstration Thermometer from APH you can read, set, and compare temperatures. The Fahrenheit and Celsius scales are in large print and braille.

Tactile Demonstration Thermometer


This activity was created by Janet Ulwick-Sacca for Great Expectations.

diagram of the balance scale

Balance scales are easy to make and easy to use. Make your own to compare the weight of small items around the house. Are four quarters heavier or lighter than four nickels? Are six gumballs heavier or lighter than six peanuts?

Measurement Sing-Along


Check out this fun measurement song by PBS Kids & Ozomatli!

Estimated Versus Actual

Guess how long the following items are. Then measure each item and compare your guesses to their actual length. Were you close?

  • A dollar bill
  • An envelope
  • A paperclip
  • A bottle of ketchup
  • One of your shoes
bottle of ketchup on its side

All in the Family

block toy family of four, each a different height

Measure the height (in inches) of each member of your family — including your dogs and cats — then convert their height into feet. Note there are 12 inches in a foot.



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