3. Why calculate in
mind, when I
have my
calculator?

6. 7 x 9 – 8 + 10?
PHYSICAL MENTAL

7.  It is essential because it lays the foundation for
more complex maths.
 It provides both tools for solving problems and
filters for evaluating answers.
 It is an excellent way to stimulate one's mind.
Research has proven that there is a direct relation
between numbers, brain stimulation and
development.
 Thinking is what makes us human--not
dependance on machines to do our thinking for
us!

9.  Importance of mental math. In Factonia. (2012). Retrieved July 10, 2013, from
http://www.factonia.com/mentalmath
 Seeley, Cathy L. (2005). Do the Math in Your Head! From The National Council of
Teachers of Mathematics. Retrieved July 10, 2013, from
http://www.nctm.org/uploadedFiles/About_NCTM/President/Past_Presidents_Messag
es/Seeley_Messages/2005_12_mathhead.pdf
 Why Is Mental Math Important? In Ask Dr. Math. (2004). Retrieved July 10, 2013,
from http://mathforum.org/library/drmath/view/65180.html
 Why mental maths is important. In Mums Limited. (n.d.) Retrieved July 10, 2013, from
http://www.mumsnet.com/learning/maths/why-mental-maths-is-important