this page gives free access to OER units
which are the smallest chunks of learning for students

                they are standalone, yet can be used inside a course,
                or in combinations with other units to build a course

                a list of units is given here
                http://www.open-ed.net/oer/units.pdf
        eg   see this unit on how to use the English prepositions
                http://www.open-ed.net/oer/unit21.html



for further information
please email :   kawachi@open-ed.net