Base--ten blocks employing single, attachable blocks of one colo

Details Base--ten blocks employing single, attachable blocks of one colo Base--ten blocks employing single, attachable blocks of one colo

1990-10-29

1992-08-11

Mancene, Gene

Education and demonstration

Mathematics

Arithmetic

434208, 446 85, 446128, G09B 1902, A63H 3308

Patent

active

051374528

ABSTRACT:
Base-ten blocks for teaching arithmetic to children, in which each block (19) has a projecting boss (27) with curved (bowed-out) sides (29) and an aperture (33) with straight sides (35), so that blocks (19) can be securely joined together to form multiples of units. A row of integral blocks (37) has common wall thicknesses (42) between adjacent blocks equal to twice the thickness of the end wall (45) of the row so that the row can be correctly mated with a row of single blocks or end-to-end rows of shorter blocks. Integral rows (37) of ten blocks each have two end bosses (41) for joining to other rows (37) to make flats (47) of one hundred units. Each flat has four bosses (51) for joining to other flats (47) to make a cube of one thousand units. The blocks have one color for units, a different color for rows of tens, a different color for flats of one hundred, and a still different color for cubes of one thousand. The blocks can be used to teach addition, multiplication, subtraction, division, etc., to children.

REFERENCES:
patent: 349646 (1886-09-01), Grigg
patent: 1305724 (1919-06-01), Kennedy
patent: 1971545 (1934-03-01), Tompkins
patent: 2278894 (1942-04-01), Paulson
patent: 2440205 (1948-04-01), McLain
patent: 2972833 (1961-02-01), La Grutta
patent: 3094792 (1963-06-01), Morgan et al.
patent: 3389493 (1968-03-01), Zysset
patent: 3414986 (1968-03-01), Stassen
patent: 3566531 (1971-03-01), Hasel et al.
patent: 3577671 (1971-05-01), Woollett
patent: 3766667 (1973-10-01), Glassman
patent: 4305221 (1981-12-01), Chatanl
patent: 4645461 (1987-02-01), Mortensen
patent: 4838794 (1989-06-01), Coddington

Affiliated with

Also associated with

Rating

Base--ten blocks employing single, attachable blocks of one colo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Base--ten blocks employing single, attachable blocks of one colo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Base--ten blocks employing single, attachable blocks of one colo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-343219