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2. Tape diagram - Wikipedia

   en.wikipedia.org/wiki/Tape_diagram

   A tape diagram is a rectangular visual model resembling a piece of tape, that is used to assist with the calculation of ratios and addition, subtraction, and commonly multiplication.

3. Fraction - Wikipedia

   en.wikipedia.org/wiki/Fraction

   A simple fraction (also known as a common fraction or vulgar fraction, where vulgar is Latin for "common") is a rational number written as a/b or ⁠ ⁠, where a and b are both integers. [9] As with other fractions, the denominator (b) cannot be zero. Examples include ⁠ 1 / 2 ⁠, − ⁠ 8 / 5 ⁠, ⁠ −8 / 5 ⁠, and ⁠ 8 / −5 ⁠

4. Elementary mathematics - Wikipedia

   en.wikipedia.org/wiki/Elementary_mathematics

   In the 'Number Sense and Numeration' strand students develop an understanding of numbers by being taught various ways of representing numbers, as well as the relationships among numbers. [ 2 ] Properties of the natural numbers such as divisibility and the distribution of prime numbers , are studied in basic number theory , another part of ...

5. DreamBox Learning - Wikipedia

   en.wikipedia.org/wiki/DreamBox_Learning

   DreamBox Learning Math teaches students grades K-8 various mathematical subjects, such as addition, subtraction, multiplication, division, fractions, geometry, and algebra. The program utilizes an algorithm to determine if the user is able to understand certain lessons.

6. Fourth grade - Wikipedia

   en.wikipedia.org/wiki/Fourth_grade

   Fourth grade (also 4th Grade or Grade 4) is the fourth year of formal or compulsory education. It is the fourth year of primary school . Children in fourth grade are usually 9–10 years old.

7. Cuisenaire rods - Wikipedia

   en.wikipedia.org/wiki/Cuisenaire_rods

   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.