2014-02-18 07:08:09 - Math Genie provides math for kids abacus lessons everyday to solve problems with cool games from private tutors and combines the ancient abacus with modern child psychology to create a unique strategy for kids to learn math.
"The New Jersey Assessment of Skills and Knowledge For Grade 4 Technical Report Dated May 2003 created and made available by the New Jersey Department of Education is significant to all the parents students and private tutors at all of the three Math Genie abacus math for kids schools in New Jersey in the United States of America, continues on to state the following, quote “Scale scores for the NJ ASK tests are linearly related to the raw score metric of the base year. Thus, to obtain scale scores for each test, a set of scaling parameters are applied to the raw score metrics in the base years. The base year is the year the cut scores were set on
the form. The base year for the grade 4 Language Arts Literacy test is 2001. For grade 4 Mathematics, the base year is 1999. Table 7.1.1 shows the scaling parameters for each test".
"TABLE 7.1.1 2003 New Jersey Assessment of Skills and Knowledge (NJ ASK) Scaling Parameters for Base Forms. Grade. Subject. Base Year. Points. Slope. Intercept 4. Language Arts Literacy. 2001 0-43. 4.34783. 106.52174. Mathematics. 1999. 0-43. 4.16667. 104.16659. 7.2 Equating Language Arts Literacy. Scores on the 2003 NJ ASK grade 4 LAL form were equated back to scores on the 2001 LAL base form via 2002 anchored Rasch difficulty parameters and using IRT true score equating procedures. The grade 4 base year LAL raw score scale ranged from 0-43.0. The base year raw cut score for Proficient was 21.5 (200) and the raw cut score for Advanced Proficient was 33.0 (250). These raw cut scores were derived from a standard-setting workshop in 2001. To perform equating, data must be collected".
"NJ ASK uses a Common-Item Nonequivalent Groups design. Common items are items that appear on both the reference (e.g., 2002) and new (e.g., 2003) forms. Common items are often also called linking and/or anchor items. The meaning of “Nonequivalent groups” is that a different set of students took the reference and new forms, and no assumptions are made that the two groups are equal in ability. The groups could have the same ability, but the students taking the new form could also be more able or less able than the students taking the reference form. The Language Arts Literacy equating design makes use of external anchor items (i.e., common items that do not count toward a student’s operational score). LAL uses an external anchor design that allows for two sets of anchor items to be used in the equating” end quote".
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