Fibonacci  - Disseminating Inquiry-Based Science and Mathematics Education in Europe

Resources

Virtual Math Class

• Virtual Math Class,
  The dynamic files in the Virtual Math Class are both in ggb and html format.

Learning Environments

5^th grade

Common Fractions - by Toni Chehlarova and Evgenia Sendova

• Enhance your eye-meter with a "half"
• Enhance your eye-meter with "one-third"
• Enhance your eye-meter with "one-fourth"
• Common fractions
• Enhance your eye-meter with common fractions
• Proper and improper common fractions
• Common fractions and natural numbers
• Comparing common fractions with the same denominator
• Number ray and common fractions (BG)
• Basic property of common fractions
• Reducible and irreducible fractions
• Comparing common fractions with different denominators (BG)
• Adding common fractions with the same denominator
• Adding common fractions with different denominators
• Multiplying common fractions
• Mixed numbers
• Egyptian fractions
• Fractions and percentage
• Domino and common fractions (BG)
• Domino and decimal fractions (BG)
• Domino and fractional numbers (BG)
• Cevians (BG)
• Part of a triangle area (BG)
• Parts of a square with equal areas (BG)

6^th grade

• Cartesian Coordinate System - Toni Chehlarova

7^th grade

• Parallelograms - Toni Chehlarova
• Types of Parallelograms - Toni Chehlarova
• Elementary and Basic Constructions in Geometry - Toni Chehlarova

8^th grade

• Reflection - Desislava Dimkova

9^th grade

• Dilation - Desislava Dimkova

10^th grade

• Linear Function - advanced studies - Desislava Dimkova
• Quadratic Function - advanced studies - Desislava Dimkova

11^th grade

• Inversion - 11th grade at math schools - Desislava Dimkova
• The Geometric Transformations and the Complex Plane - Georgi Dimkov and Desislava Dimkova

Interdisciplinary

• Regularities in the Periodic System - Toni Chehlarova, Yordanka Dimova

Miscellaneous

• Harnessing the rotational symmetry dynamically in a design context - Evgenia Sendova, Toni Chehlarova
• Fagnano's Problem - Desislava Dimkova
• The Sofa Moving Problem - Albena Vassileva
• Pulsating heart or how to make a valentine - Toni Chehlarova
• "Salabashev's Problem" - Toni Chehlarova, Evgenia Sendova
  

Learning Environments Contributed by Teachers

• Graph of the function f(x)=ax²+bx+c - Daniela Petrova, 91st German Language High School - Sofia
• Exploration of the function f(x)=a(x+m)²+n - Daniela Petrova, 91st German Language High School - Sofia
• Graph of the function f(x)=|ax²+bx+c| - Daniela Petrova, 91st German Language High School - Sofia
• Solving the equation|ax²+bx+c|=kx+n - Daniela Petrova, 91st German Language High School - Sofia
• Maximum and minimum of a function in a closed interval - Daniela Petrova, 91st German Language High School - Sofia

Didactical Scenarios

• There are Enough Rotational Solids to Go Around - Toni Chehlarova, Evgenia Sendova
• Nets of Archimedean and Platonic Solids - Toni Chehlarova, Evgenia Sendova
• Reflecting on the Reflection - Evgenia Sendova, Pavel Boytchev

Helpful Links

• Virtual Math Class,
  The dynamic files in the Virtual Math Class are both in ggb and html format.
• GeoGebra official website
• Dynamic mathematics with GEONExT - another Bulgarian site of the Fibonacci Project supported by the South-Western University of Blagoevgrad