Meet
Al-Karaji
Algebra & patterns
Notice. Sketch. Try.What will you make?
Their story. Your next idea.
Al-Karaji developed algebra after the work of al-Khwarizmi. His work treated algebraic quantities using operations such as multiplication.
1001 Inventions, p. 84
powera way to describe repeated multiplication
operationa mathematical action, such as adding or multiplying
YOUR TURN · 10 MINUTES
Build a pattern and explain it
Paper and large paper squares.
- Make a row with one square, then another with two, then another with three.
- Draw the next two rows before adding the squares.
- Count the total after each row and write the numbers in a table.
- Describe the rule in your own words. Ask someone to predict the next total.
Let’s wonder
How can one rule describe many different number examples?
My next question: __________________________________________________