によって Katie Mickelson 9年前.
463
Math 1512 Mind Map
The fundamental principles of numeration and computation for elementary education focus on algorithms, mental arithmetic, and various numeration systems from history and present day.
によって Katie Mickelson 9年前.
463
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The goal of this mind map is to explain the basic concepts of numeration and computation in the elementary grades. The audience is pre-service teachers.
This video shows you how to convert from other bases back to base 10
This video shows you how to convert from base 10 to other bases.
Follow the link to find information on Egyptian Numerals, Roman Numerals and the Indo-Arabic System.
See hyperlink on main topic for information regarding Indo-Arabic System.
Babylonian Numeral System
Roman Numeral System
Egyptian Numeral System
The site attached has information on rounding for the elementary grades.
The site attached has ideas and examples of estimation and is geared towards the elementary grades.
The reason for this tip is that it tends to reduce the amount a person has to remember.
This term means that at the beginning of a calculation, we modify the numbers to minimize the mental effort required by adding "0".
Typically regrouping numbers to find multiples of 10.
This video shows an example of the short division algorithm.
Otherwise known as "repeated subtraction"
This video will show an example of multiplying in "base 7"
Otherwise known as "repeated addition"
This type of algorithm allows students to exchange pieces of manipulatives in order to represent the same number but with the smallest number of pieces.
Here are three examples of manipulatives that can be used for adding and subtracting whole numbers.
