Interesting addition-subtraction learning apparatus for children

The interesting addition-subtraction learning device for children is composed of basic numeral blocks representing 1,2,3...n, in which the numaral block 1 is basic unit one and others are greater than it by n-1 units. Said numaral block has the image of real object, their numeral relationship, and r...

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Bibliographic Details
Main Author SHI JINGSEN
Format Patent
LanguageEnglish
Published 25.10.1995
Edition5
Subjects
ADVERTISING
APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE
CRYPTOGRAPHY
DIAGRAMS
DISPLAY
EDUCATION
EDUCATIONAL OR DEMONSTRATION APPLIANCES
GLOBES
PHYSICS
PLANETARIA
SEALS
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Summary:The interesting addition-subtraction learning device for children is composed of basic numeral blocks representing 1,2,3...n, in which the numaral block 1 is basic unit one and others are greater than it by n-1 units. Said numaral block has the image of real object, their numeral relationship, and relative addition or subtraction equation so that children can understand numerals from different respects.
Bibliography:Application Number: CN1994119399