Taj Mahal Math
Using columns for double digit addition without regrouping.
After a short study of significant places around the world, including the Taj Mahal, we found ourselves doing “Taj Mahal Addition”—referring often to using and lining up our numbers in columns.
This unique package begins with defining digit, number and column. Students learn there are only ten digits and this place value system was invented by the Hindu people of India.
Students see the importance of “place” and lining up numbers. They begin by adding using representation: “popsicle sticks” and “marbles”. Students will represent and add.
Student then learn how to “expand” a number. They will expand to add. This leads to regular adding in columns.
Included are two pages of tongue twisters on an Indian animal theme. Add and use the code to make the tongue twister. Last page is a colouring page: find the spaces with different numbers of digits and colour accordingly.
Page by page:
What is a digit? Explore, find, colour
Digits: Match each digit symbol to its represented number
What is a column? Find, count, record
Poster: Using digits to make numbers
Poster: Place Matters! Do you know the origin of the system?
Place Matters: Showing the difference between 1 and 10
Double Digit Addition using columns demonstrated
The Important Thing: columns help us line it all up.
Representing Numbers: Demonstrating popsicle sticks and marbles
Represent: Using graphic organizer of columns: 6 on a page
Represent and Add: Demonstrating addition using representation
Represent and Add: Using graphic organizer, 2 on a page
Represent and Add: Using graphic organizer, 3 on a page x3
Expand and Add: Demonstrating addition using expanded form
Expand, Add and Rewrite: 6 on a page x 5
Add without representing or expanding: Demonstrating process
Double Digit Addition: Using graphic organizer, 9 on a page x5
Tongue Twisters: Cobra/Tiger
Colouring Page: Taj Mahal: recognizing double, triple, quadruple digit numbers.