“mainly user-friendly material”
I like the layout of this material and find most activities are suitable for this age-group, and i would think could be used with varying numbers of children. i especially like the idea for food, linked to each story!
Click as a whole cannot really be used with our Sunday School, however, as we have classes which run across age-groups and we do some of the session as one group, and the material for each age-group is different.
In theory I like the way the whole story of salvation is told through the whole series - but it does seem to assume that a child starts in Sunday school at three and carries on until they are 11, and that each year you can start a new class at the first session, whilst last year's class carries on (ie that you have a class for each year group) - otherwise the continuity for an individual child is lost as they come in part way through the series, maybe then go to the beginning as you start a new cycle, and then move up a class into the middle of the next series.
I therefore tend to pick and choose sessions from the material as I need it, and overall find it very useful.