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Free test authoring mathematics software with 500+ solutions in arithmetic, pre-algebra, algebra, trigonometry and hyperbolic trig. Easy creation of quizzes, tests, exams and homeworks.

This free collection of tests in arithmetic, pre-algebra, algebra, trigonometry, hyperbolic trig and calculus offers step-by-step solutions together with extensive reference material and interactive training technique.

168767 trigonometric problems from basic to advanced. Fully explained step by step solutions. Related math concepts. Authoring options to develop didactic materials, variant tests and lesson plans

Unique interactive multimedia Chemistry teaching software.

Chemistry teaching software which simulates the bonding of covalent compounds on screen. Learn how covalent compounds are formed by atoms sharing electrons. Includes a reference section to support students learning with basic facts and information.

Chemistry teaching software which simulates the bonding of Ionic compounds on screen. Learn how Ionic compounds are formed by atoms gaining and losing electrons. Includes a reference section to support students learning.

Chemistry teaching software which simulates the building of any of the first 20 atoms (up to calcium) on screen. Learn how atoms are formed from electrons, protons and neutrons and how the electrons are arranged in shells or energy levels.

70698 of fully explained algebraic solutions. Related math concepts. Formulas proofs. Authoring options to develop didactic materials, variant tests and lesson plans