だんなで算数３年４

This is the fourth volume of the elementary school for three years, "arithmetic together".
I have recorded the learning game "parent turtles, turtles," "hopping" and "decimal-fraction card game". It contains the developmental content.

"Parent turtles, turtles"
· I move on top of the white stone, are on three stone, the turtle of large, medium and small.
-At a time, you will be able to move next to the turtle of one animal, but you will not be able to put a large turtle on top of the small turtle.
· Move to devise to be able to move the turtle all in the least number of times.
[Aim]
- Through activities that move the turtle while outlook ahead, continue to resolve the problem, will develop the ability to think about things in an orderly sequence.
· It is the application of the puzzle called "Tower of Hanoi" reference. It is a puzzle to be able to enjoy even in the real thing.

"Hopping"
• The sorting is moving in an orderly sequence of the frog two colors are on the leaf of two colors, the color of the frog and the leaf color to be the same.
Frog, you can either move to the next and move them to jump over only one animal frog next.
· Move to devise to be able to move the frog all in the least number of times.
[Aim]
- Through activities that move the frog while outlook ahead, continue to resolve the problem, will develop the ability to think about things in an orderly sequence.

"Decimal-fraction card game"
· There is a card that mix fraction is a simple fraction of 2 or less. From the card opened at hand, we will pick and two or more cards to be in the same position in the number line, the three or more cards to line up at regular intervals in the number line.
· I can unnecessary card and discard one by one from the inside of the card at hand.
Card the same card, equidistant to determine in the number line on the size. But you get points by the number of cards was established.
· It is the end card to be able to choose when you no longer.
[Aim]
· We will help you to understand the magnitude relation of fraction and decimal.
-By the progress of learning, the width of the combination of cards to choose will continue to change.
 I can challenge at any grade of third grade or more.
-I to be able to understand how to represent meaning and decimal.
That you understand the meaning of addition and subtraction of decimal numbers to the nearest 1/10, to think how to calculation, it is possible to calculate them.
-I to be able to understand how to represent and meaning of fractions.
That for a simple case, to understand the meaning of addition and subtraction of fractions, we consider how to compute.
• The represented using concrete materials, diagrams, and number line and decimal fractions, activities that compare the size.
· To know with that (4 years) fraction is represented by the same mechanism as an integer, a better understanding of the relative size of the number.
-That we take into account the fact that (4 years) for a simple case, it is equal to a fraction of the size.
· To think about the size and equality (5 years) fraction, are summarized how compared large and small.