Lifelong Learning Programme

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Experiences

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TEACHERS EXPERIENCES FORM

Title of the Experience
Discriminant
Name of the teacher
Marieta Andreeva
Country where it took place
Bulgaria
School typology
High Secondary School
Thematic Area
Maths
Experience typology
Teaching in class
Type of contact
Direct
Description of the Experience
The equation ax2 + bx + c = 0 where a ≠ 0, b and c are real coefficients is called quadric polynomial.
When a=0 the polynomial turns into linear and then it has one root. When a ≠ 0 the expression D = b2 – 4ac is called discriminant. Sometimes it’s difficult for the students to remember the expression for the discriminant. In order to facilitate remembering I tell them the formula not with mathematical terminology (which is necessary) but with their student jargon which they use in their communication with other students. In their short messages they use the number 4 instead of letter ‘ч’. In this way the part of the expression of the discriminant ‘4ас’ sounds like the word ‘hour’. Telling them this way the formula they remember it and apply it easier when they need it.

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