Kimmel Asterisk Method for Factoring Trinomials

A presentation on applying the Kimmel Asterisk Method for factoring polynomials in the form ax^2+bx+c after any GCF has been factored out. Forget guess and check. Watch the video once through, than watch it again while trying your own problem. Good luck! Problems to try: 2x² + 9x − 5 2x² + 7x − 15 2x² − x − 15

Category:

Education

Tags:

• asterisk
• math
• polynomials
• factoring
• trinomial
• education
• algebra
• quadratic

[quiziggy]

sweet!

[beradinindy]

Guys, we have to stop teaching our students these tricks that don't require them to have any understanding of the actual concepts at hand. I can appreciate the utility of this method in producing the correct answer. But we're really doing our students a disservice by showing them these "magical" tricks that give them the right answer without teaching them to develop their logic skills.

[carolfranklin7072007]

thank u

[soulfox40]

wow this was very helpful :)

[turbosrfunny]

What if you end up with a bigger number at the top of the asterisk and a smaller number at the bottom of it?

Like for example: 18y^4+21y^3-60y^2

[hrkimmel]

Thank you : )

[videosbyjulieharland]

I see you discuss the GCF in the other video you posted where you are at the blackboard. Love it!

[videosbyjulieharland]

Very Cool Idea!!! Thanks for sharing! It's important to note that this method will work as long as there is not a common factor in the trinomial. The key for students is to remember to factor out the GCF first. Sometimes they forget that and make it harder than it really is. Awesome!

[karlmill]

Fantastic method, far superior to the atrocity that is the snowflake method

[ellietex]

Amazing! I love it!