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Susan Baker Empson is an American scholar of mathematics education whose work includes longitudinal studies of children's mathematical development, the use of Cognitively Guided Instruction in mathematics education, analyses of childhood understanding of the concept of fractions, and research on the professional development of mathematics educators.
The Principles and Standards for School Mathematics was developed by the NCTM. The NCTM's stated intent was to improve mathematics education. The contents were based on surveys of existing curriculum materials, curricula and policies from many countries, educational research publications, and government agencies such as the U.S. National Science Foundation. [3]
Cuisenaire rods illustrating the factors of ten A demonstration the first pair of amicable numbers, (220,284). Cuisenaire rods are mathematics learning aids for pupils that provide an interactive, hands-on [1] way to explore mathematics and learn mathematical concepts, such as the four basic arithmetical operations, working with fractions and finding divisors.
The curriculum introduced many basic concepts such as fractions and integers earlier than normal. Later in the project's development, new content in probability and geometry was introduced. The curriculum contained a range of supporting material including story books with mathematical problems, with lessons often posed in a story, designed to ...
Fractions are introduced at age 9/10, decimal numbers and proportions at age 10/11, percentages and rates of interest at age 11/12, algebra at age 12/13. At the secondary level, topics include algebra, geometry , conics , trigonometry , probability , combinatorics and calculus .
Mathematics education in the United States varies considerably from one state to the next, and even within a single state. However, with the adoption of the Common Core Standards in most states and the District of Columbia beginning in 2010, mathematics content across the country has moved into closer agreement for each grade level.