Double Value Vertical Flash Cards Addition Subtraction Polypropylene (PP) Contains no mercuryLong life batteryCelsius

Contains no mercuryLong life batteryCelsius and FahrenheitTemperature range 32

left and right red LED lights and three control buttons

and purple (12 pieces per pentomino for a total of 72) packed in a clear plastic tub for easy storage

Green and Yellow (no color choice)

making it very malleable and easy to use

Double Value Vertical Flash Cards Addition Subtraction Polypropylene (PP) Contains no mercuryLong life batteryCelsiusMPN: 005646 UPC: 832382008141 Notched corners for quick organization. Large, easy to handle 6 1 4" x 3 1 4" cards. Bold, heavy type to use with large groups. Durable, thick card stock (14 pt.). Self checking. Great for small groups, pairs, and whole class participation. Great for teaching the relationship between + , (e. g.: 3+1=4 on one side, 4 1=3 on the reverse). Key Features : Great for teaching the relationship of + and multiply divide;