To go beyond the CCSS, we categorized mathematics-vocabulary terms accord- ing to the four categories (i.e., technical, subtechnical, symbolic, general) described by Monroe and Panchyshyn (1995). Overall, general terms were easiest for students, with students correctly identifying general terms more than 90% of the time. Accu- racy of subtechnical terms was 56%, followed by technical terms at less than 45%. To learn more about the intricacies of subtechnical terms (i.e., terms with dual mean- ings), we also categorized the 64 mathematics-vocabulary terms according to the 11 difficulty categories of Rubenstein and Thompson (2002). Of the terms with dual meanings, students correctly answered terms with two mathematical meanings ap- proximately 75% of the time, and terms with shared meaning across mathematics and English were correctly interpreted in approximately 60% of cases. For terms with distinct meanings in mathematics and English, the performance was approx- imately 57%, and 47% of the time, students correctly answered terms with a math- ematics meaning and a meaning in another content area. We were surprised that students demonstrated the most success with terms with two mathematical mean- ings, but on closer examination, four of the six terms that fell into this category also fell into other dual-meaning categories. For example, quarter has multiple mathe- matical meanings (i.e., a coin, one fourth of a fraction, 15 minutes past an hour), but it is also a general definition related to living spaces. Another example is cube, with two mathematical meanings (i.e., solid figure and a power of three) and a meaning in general language (i.e., ice cube, Rubik’s cube). With the majority of mathematics- vocabulary terms at first grade having two, three, or four distinct meanings, it was predictable that student performance would be variable on these terms.