Subtract within 20 (K-A)

S#	Lecture	Course	Institute	Discipline
1	Subtract within 20 using a number line. (K-A)	Subtract within 20 (K-A)	Khan Academy	Basic and Health Sciences
2	Subtract within 20 using place value blocks. (K-A)	Subtract within 20 (K-A)	Khan Academy	Basic and Health Sciences
3	Subtract within 20 using ten frames (K-A)	Subtract within 20 (K-A)	Khan Academy	Basic and Health Sciences
4	Subtracting 14 – 6 (K-A)	Subtract within 20 (K-A)	Khan Academy	Basic and Health Sciences

Sialkot Chamber of Commerce & Industry P.O. Box 1870, Shahrah-e-Aiwan-e-Sanat-o-Tijarat, Sialkot City 51310 – Pakistan