By Concerned Teacher
There seems to be a lack of content validity in the Mathematics National Diagnostic Test for Grade 2. More than once, pupils are being tested on subtracting a two-digit number from another two-digit number with regrouping.
For example, the 2022 Mathematics National Diagnostic Test- Section One-Number Sense, Question 1(d) has 80 minus 42(vertical). However, the Grade 2 Learning Standards states: “Use a variety of strategies and tools to subtract a one-digit number from a two-digit number without and with regrouping.” (See MT.2.NS.OS.3.)
Hence, this does NOT include subtracting a two-digit number from another two-digit number with regrouping. The same may be said of adding two, two-digit numbers with regrouping.
Also, for time, the standard states: “Tell and write the time on the hour and half hour using words and numerals.” (See MT.2.M.UT.1.) Yet, Section 3 – Measurement, question 9, of the aforementioned Diagnostic Test, has a task involving quarter past the hour-quarter past 5.
Are those who construct the Mathematics National Diagnostic Test fully familiar with the Grade 2 Mathematics Learning Standards?
Do they consult the Learning Standards when constructing the test? It is unfair for children to be tested on concepts that have not yet been taught, concepts that are in the Standards for higher grades.
So, the Ministry of Education should look into this matter to avoid some continual lack of content validity in future Mathematics National Diagnostics Test.
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