2011 оны 1-р сар · The Energy and Resources Institute (TERI)
Электрон ном
48
Хуудас
Үнэгүй жишээ
Энэ электрон номын тухай
An innovative title that introduces numbers up to 20 through elements of the environment. Teacher's notes help raise awareness on the environment, while simple 'green' activities enhance the learning experience.