Subjects: TEACHING aids; MATHEMATICS education (Elementary); MATHEMATICS problems & exercises
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Subjects: MATHEMATICS; ACTIVITY programs in education; TIME
Subjects: ACTIVITY programs in education; TEACHING aids; EXPERIMENTAL methods in education
Subjects: TEACHING; MATHEMATICS; MATHEMATICS teachers
Subjects: MATHEMATICS; TEACHING; MATHEMATICS teachers
Subjects: PERIODICALS; MATHEMATICS education; ACTIVITY programs in educationUNITED States
Subjects: MATHEMATICS education; STUDY & teaching of arithmetic; TEACHING aids
Subjects: ACTIVITY programs in education; EXPERIMENTAL methods in education; MATHEMATICS education
Subjects: ACTIVITY programs in education; MATHEMATICS education; WORD problems (Mathematics)
Subjects: MATHEMATICS education; CREATIVE activities & seat work; RECREATIONAL mathematics