mirror problems

Who gave this definition? "Problem based learning as a curriculum development and instructional system that simultaneously develops both problem solving strategies and disciplinary knowledge basis and skills by placing students in the active role of problem solver confronted with its structured problem that mirrors real-word problems".

Word problems and Orthogonal problems

POAC problem||Stoichiometry problem

Rail problems and Rod Problem

Devided problem|| Remainder problem|| last 3 digits problem|| Multinomial theorem

Vowel & Consonant problem || Boy and Girl problem || Cricket and station problem || Boat problems

The assignment problem is generally defined as a problem of …......

Which type of mirror could be used as a dentist's mirror ?