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Cuisenaire rods illustrating the factors of ten A demonstration the first pair of amicable numbers, (220,284). Cuisenaire rods are mathematics learning aids for pupils that provide an interactive, hands-on [1] way to explore mathematics and learn mathematical concepts, such as the four basic arithmetical operations, working with fractions and finding divisors.
Similar to Madeline 1st and 2nd Grade, it follows Madeline on a tour of her neighborhood with a variety of activities. [8] Madeline 1st and 2nd Grade Math, the final game in the series, was released as a two-CD-ROM set on July 12, 1999. [12] The discs were also sold separately as Madeline 1st Grade Math and Madeline 2nd Grade Math.
Virtual math manipulatives are sometimes included in the general academic curriculum as assistive technology for students with physical or mental disabilities. [4] Students with disabilities are often able to still participate in activities using virtual manipulatives even if they are unable to engage in physical activity. [5] [6]
JumpStart 1st Grade (3rd), JumpStart Adventures 3rd Grade (4th), JumpStart 2nd Grade (5th), JumpStart Kindergarten II (6th), JumpStart Preschool (7th), JumpStart Adventures Fourth Grade (8th), JumpStart Toddlers were within the top-selling educational software across 13 U.S. software retail chains in the week ending September 19, 1998. [35]
Christopher Danielson developed a new set of blocks, called Twenty-First Century Pattern Blocks. [8] The rhombus in this set has the same size as the blue rhombus in the traditional set. The dart and the 30°–60°–90° triangle have the same area, while the kite and the hexagon are twice that area.
In mathematics, a Golomb ruler is a set of marks at integer positions along a ruler such that no two pairs of marks are the same distance apart. The number of marks on the ruler is its order , and the largest distance between two of its marks is its length .
This list of triangle topics includes things related to the geometric shape, either abstractly, as in idealizations studied by geometers, or in triangular arrays such as Pascal's triangle or triangular matrices, or concretely in physical space.
The apparent triangles formed from the figures are 13 units wide and 5 units tall, so it appears that the area should be S = 13×5 / 2 = 32.5 units. However, the blue triangle has a ratio of 5:2 (=2.5), while the red triangle has the ratio 8:3 (≈2.667), so the apparent combined hypotenuse in each figure is actually bent. With the bent ...