- Combine like terms
with integer coeficients
- Variables only
- Variables and numbers
- Mixed problems
with decimal coeficients
- Variables only
- Variables and numbers
- Mixed problemsg
with exponents
- Whole numbers only
- With decimals
multiply terms
- Whole numbers only
complete integer coefficients
- Variables only
- Variables only -2-
- Variables only -expert-
- Variables and numbers
complete decimal coefficients
- Variables only
- Variables only -2-
- Variables only -expert-
memory games
- add&subtract
- add&multiply -1-
- add&multiply -2-
- divide&multiply
- mixed items
- Polynomials
Adding and subtracting
- Correctly transformed? - level 1
- Correctly transformed? - expert
- Add two polynomials
- Subtract two polynomials
- Add & Sub two polynomials
- Tricky problem
- Three polynomials - top level
Pyramids of expressions
- Pyramid level 1
- Pyramid level 2
- Pyramid -expert-
- Pyramid -expert 2-
- Pyramid -top expert-
Repeat distributive law
- Visualization
- Find missing measure
- Measuring a rectangle
- Illustrative exercise
- Convert texts to expressions
- number times bracket
- bracket times number
- mixed problems
- Multiplying out -1-
- Multiplying out -2-
- Multiplying out -Profi-
- Factoring out -1-
- Factoring out -2-
- Factoring out -expert-
Multiplying polynomials
- Visualization
- Using partial product
- Correctly transformed?
- Practice on level -1-
- Practice on level -2-
- for professionals -1-
- for professionals -2-
- for experts only
- Tricky problem
Geometric applications
- Rectangles as expressions
- Perfect square trinomials
Basics
- Square numbers 1² to 25²
- Square numbers 0.1² bis 2.5²
- Memory 1² bis 25²
- Memory 0.1² bis 2.5²
Derivations
- Square of a Sum
- Square of a Difference
- Difference of two squares
Coefficient of x² is 1 - with click
- Square of a Sum
- Square of a Difference
- Combined exercise
- Difference of two squares
- Direction left to right
- Direction right to left
- for professionals only
Coefficient of x² ≠ 1 - with click
- Direction left to right
- Direction right to left
- for professionals only
>Coefficient of x² is 1 - free typing
- Square of a Sum
- Square of a Difference
- Combined exercise
- Difference of two squares
- Direction left to right
- Direction right to left
- Direction right to left -2-
- for professionals only
Coefficient of x² ≠ 1- free typing
- Direction left to right
- Direction right to left
- for professionals only
Tricky - but nice
- First challenge
- Second challenge