Multi-Strand Test of Proficiency in Area Formulae

Items

Cronbach’s Alpha

Area formula of a square

1, 2, 3, 4, 5a, 5b, 5c, 5d and 5e

0.97

Area formula of a rectangle

6, 7, 8, 9, 10a, 10b, 10c, 10d and 10e

0.95

Area formula of a triangle

11, 12, 13, 14, 15a, 15b, 15c, 15d and 15e

0.97

Overall

Items 1 to 15e

0.98