13. How would you introduce our system of notation?
14. Why?
15. Show fully how you would deal with ‘tens.’
16. How long should a child work with ‘tens’ and units only?
17. What should follow?
18. What rule must be observed throughout?
19. How would you apply the same principle to weights and measures?
20. What part should parcels play at this stage, and why?
21. Show how the child should use a foot-rule.
22. How would you exercise his judgment as to measures and weights.