ALL children I have taught love pastels, chalk or oil they love them all. The still life example above is from a Year 5 boy I taught and you can see the energy and enjoyment he had in working with the dynamic colours. Apart from the colours they love the tactile quality of this media. Then there is the way the colours magically blend with each other to produce new colours with darker and lighter shades from that new colour.
This is another example from a Year 4 boy student. We had been looking at examples of Turner’s work for inspiration. The challenge was to start with the line of horizon and then mirror the colours. Then graduate out with deepening shades of colours but with black being banned.
As with all your media experiment and consider the kind of finish you want your work to have. Oil pastels give a sheen but do not blend so well where as chalk pastels have a soft finish and the colours blend with ease. Which ever pastels you use make sure you protect yourself and the work surfaces as things can get messy. Also have a can of fixative standing by so you can immediately fix your work. One final piece of advice, less is more, go for a smaller colour assortment but a higher quality pigment it will result in a better finish to your work.