var scheduleAdd = {};
    scheduleAdd.schedule = name;
    scheduleAdd.visible = 'yes';
    console.log(scheduleAdd);
r.db('test').table('teachers').update(function(teacher) {return teacher('schedules').insertAt(0,scheduleAdd)}).run(connection, function(err, result) {
    if (err) throw err;
    ;
    console.log('updated teacher schedules');
    console.log(result);
        });
     });

{ schedule: 'weekend', visible: 'yes' }

'Inserted value must be an OBJECT (got ARRAY):n["{\n  \"schedule\": \"weekend\",\n      \"visible\": \"yes\"\n}"]',