Summary

The MATHeCADEMY.net website contains 2*4 study units in ‘mathematics from below, the LAB-approach’, organised as lab-activities where the learner learns ‘CATS’, i.e. learns to count and add in time and space.

The study units CATS1 are for primary school and the study units CATS2 are for secondary school.

The units are structured by educational questions and answers, as e.g.

Q. How to count MANY?
A: By bundling and stacking the total T predicted by T = (T/b)*b

Q. How to recount 8 in 3s: T= 8 = ? 3s
A: T= 8= ?*3= ?3s, T= 8=(8/3)*3 = 2*3 +2 =  2*3 +2/3*3 = 2 2/3*3

Q. How to recount 6kg in $: T=6kg=?$
A: If 4kg = 2$ then 6kg = (6/4)*4kg = (6/4)*2$ = 3$

SUMMARY: Read more