Math Mammoth Division 2 is a continuation of the Math Mammoth Division 1 book. It
includes lessons on division, long division, the remainder, part problems,
average, and problem solving. The book is most suitable for fourth grade,
when children are first introduced to long division.
We start out
by reviewing basic division by single-digit numbers. Then students study some basic
division topics such as division terms, division by 1 and 0, and dividing by
whole tens and hundreds.
The lesson Finding Parts with Division is very important. It shows an important
relationship between fractions and division. For example, we can find 3/4 of a
number by first finding 1/4 (divide by 4), then multiplying that result by 3.
The lesson on remainder is just before the first lesson on long division, because that is
where the student needs to understand this concept very well.
Long division is
taught in several small steps over many lessons. We start with the situation
where each of the thousands, hundreds, tens, and ones can be divided evenly by
the divisor. Then is introduced the remainder in the ones. Next comes the situation
where we have a remainder in the tens. Finally, when we have a remainder in the
hundreds, and so on.
All along the long division lessons, the process is explained so that the student can
understand what it is based on. After the many lessons that practice and explain
long division, we see a comparison between repeated subtraction and long
division. The purpose of this lesson is to shed light in the basic idea of long
division, and not to practice a new calculation method.
After long division is mastered, we study the concept of average. Next comes Long Division with Remainder, which also contains a section on packing problems
The next two lessons contain plenty of part-related problems to solve. These problems deal
with fractional parts of a sum total, and include both dividing and multipying.
I have included many diagrams and pictorial representations of these problems to
help the student. Encourage him to draw one for those problems that don't have
any.
The last two topics are divisibility and a two-digit divisor in long division.
These topics are introductory only, as children will continue studying them in the fifth grade.
Answers are in the end of the book.
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*BONUS* - FREE MATH SOFTWARE
With any purchase of Math Mammoth books, you will qualify to get Soft-Pak math programs (list price $24.95) for just a small $3.50 s&h fee!
* Math Maker, for printable math activities with answer keys
* Math Master, for on screen practice of various math topics
* Math User, for answering the 900 multi-level word problems
* True/False Math Challenger for mastering facts 1-12
With any CD purchase or Blue Series download, you will get those above plus 3 programs more, for FREE, included on the CD.
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