A1 ( NB1- elementary): File 1D- classroom objects, indefinite article, demonstrative adjectives

Vobabulary for school and college index

• Classroom objects listen 
• Words for classroom objects

• The indefinite article + classroom objects - exercises
• classroom objects- gap-fill 

• Beginners level : http://www.agendaweb.org/grammar/articles-exercises.html
• exercise 1 
• exercise 2
• exercise 3

• Elementary level: 

• a/an/the--English explanation
• a/an exercises

• Beginners level: 
• Demonstrative adjectives: this/that/these/those explanation
• exercises index
• exercise 3- this or these
• exercise 4- that or those
• Revision- this, that, these, those