The Persistent Challenge of Scientific Numeracy in South African Higher Education
In South African universities, the transition from high school to tertiary-level science courses, particularly chemistry, often exposes significant gaps in students' mathematical proficiency. These deficiencies, collectively termed scientific numeracy, encompass essential skills like interpreting graphs, handling units, calculating averages, rearranging equations, and understanding data spread. First-year chemistry students, who form the backbone of science, technology, engineering, and mathematics (STEM) programs, frequently struggle with these concepts despite passing matriculation requirements. National data underscores the severity: only about 27.5% of Grade 12 learners achieve over 50% in mathematics, and just 17.1% score above 60% in physical sciences, limiting the pool of prepared entrants. This mismatch contributes to high attrition rates in STEM fields, with first-year failure rates hovering around 30-50% in quantitative courses, exacerbating South Africa's skills shortage in critical sectors like pharmaceuticals and engineering.
Rhodes University, like many institutions, faces this head-on in its Chemistry 1 course (CHEM101/102), serving Bachelor of Science (BSc) and pharmacy students. With curricula packed with equilibrium calculations, thermodynamics, and kinetics, there's scant time for remedial maths. Socio-economic factors compound the issue, as over 60% of students rely on financial aid from under-resourced schools, leading to eroded confidence and performance anxiety.
Enter Smart Worksheets: A Dynamic Digital Solution
Smart Worksheets, developed by LearnSci in collaboration with educators worldwide, represent a paradigm shift in addressing these gaps. These e-enabled, interactive tools embed virtual instruments, dynamic graphing, and adaptive questions within chemistry contexts. Features include randomized parameters for unique experiences per attempt, tiered feedback on errors, auto-solve for persistent struggles (with mark deduction), and instant scoring. Unlike static PDFs, they foster self-directed learning, available 24/7 on learning management systems, allowing unlimited retries without judgment.
In South Africa, these worksheets have been customized to align with local curricula, targeting six core numeracy areas: displaying numbers, ratios and percentages, scientific units, averages and spread, rearranging equations, and graphs. Early deployment provides formative diagnostics, enabling lecturers to tailor workshops and build student resilience from day one.
The Acclaimed Rhodes University Study: Pioneering Implementation
Led by Joyce Sewry from Rhodes University's Department of Chemistry, along with collaborators from the University of the Western Cape (UWC) and the University of Bristol, a landmark 2024 study introduced the Scientific Numeracy Smart Worksheet (SNSW) to 378 first-year chemistry students. Nominated for the South African Journal of Science (SAJS) Outstanding Article Award 2025, the paper details how this tool probes and bolsters numeracy early in the academic year. Published in SAJS Volume 121, Issue 9/10, it highlights real-world application in a diverse cohort: 39% pharmacy, 52% BSc, and 9% others, including repeaters.
The SNSW was integrated as a mandatory formative activity, contributing to final marks, with three weeks for completion and multiple attempts encouraged. Consent was obtained from 210 students (56%), yielding rich analytics on usage and proficiency.
Methodology: Rigorous Assessment and Ethical Design
The SNSW comprises six sections, each worth 20 marks, blending multiple-choice and numerical entry questions. Randomization ensures fresh challenges, while feedback scaffolds learning: detailed explanations for first errors, hints for subsequent, and auto-solve as last resort. Ethical approval (no. 2023-7534-8234) ensured anonymity; an optional questionnaire captured perceptions on difficulty, helpfulness, confidence, and devices used.
Data analysis via SPSS focused on completion rates, section scores, auto-solve frequency, repeat attempt improvements (t-tests), and correlation with end-of-module quantitative exam scores. This blended approach yielded instantaneous insights for educators, transforming reactive remediation into proactive support.
Revealing Results: Pinpointing Strengths and Weaknesses
Impressively, 94.6% of consenting students completed the SNSW, posting a mean score of 77% on attempted questions. Excellence shone in 'Displaying numbers' (85.8%) and 'Rearranging equations' (84.3%), reflecting solid basics. However, stark gaps emerged: 'Graphs' scored lowest at 64.5% (struggles with slopes, intercepts, outliers), followed by 'Averages and spread' at 72.2% (medians, variance, standard deviation). 'Scientific units' saw highest auto-solve (11.7%), signaling compound conversion woes.
Among 41 repeaters, second attempts surged to 82% (from 70.6%; p < 0.001), completion to 94.3% (p=0.192), and auto-solve dropped to 5.2% (p < 0.001). Greatest gains: ratios (+15.5 points) and graphs (+14.5 points). Repeaters edged higher in module quantitative sections (50.8% vs 46.5%; p=0.082), hinting at transferrable gains.
Student Perceptions: High Praise for Empowerment
196 respondents rated the SNSW 8.2/10, deeming it 'about right' difficulty (51.8%) or 'a little too difficult' (33.8%). Helpfulness peaked at 95.7% for units, 74.4% for graphs. Confidence levels: 56.9% 'fairly confident', 25.7% 'not very'. No gender or device biases (desktop 75.2%). Free-text lauded feedback ('identified my weaknesses'), improvement ('better at sig figs/units/graphs'), though some noted length.
This enthusiasm echoes UWC studies: first-year quantitative chemistry saw Group B (weak maths) close gaps via targeted workshops, with 4.0/5 ratings and comments like 'far more engaging than lectures'. Second-year kinetics boasted 8% exam uplift (p=0.027), 89% praise.
Broader Impacts: Closing the STEM Pipeline Gap
SA's TIMSS 2023 Grade 9 scores (maths 397, science 362) rank low globally, feeding university numeracy crises. STEM first-year failures exceed 40% in maths-heavy courses, stalling economic growth. SNSW offers scalable diagnostics: instant data flags class-wide issues for workshops, personalizes paths, boosts retention.
At Rhodes, it empowers diverse learners (62% aid-dependent), fostering equity. Collaborations with UWC/Bristol exemplify international synergy, customizing for SA contexts like multilingualism.
Expert Views and Institutional Rollout
Lead author Joyce Sewry notes, 'SNSW not only diagnoses but empowers students to self-remediate, vital for overloaded curricula.' Dudley Shallcross (Bristol) hails its acclaim: 'Nominated for SAJS award, set for Africa-wide expansion.'
UWC's Michael Davies-Coleman affirms: '95% engagement, targeted support narrows qualification gaps.' Plans: Extend to other SA unis, Australia, West Indies, aiming global STEM equity.
Photo by Avery Evans on Unsplash
Future Outlook: Transforming SA Science Education
As SA grapples with STEM shortages—5065 fewer graduates 2023/24—this breakthrough signals hope. Integrating tools like SNSW could slash failures, enhance throughput, align with National Development Plan goals. Policymakers should prioritize digital infrastructure, training; universities fund adaptive tech. For students, it's empowerment: safe spaces to conquer maths fears, unlocking scientific potential.
With proven gains, Smart Worksheets herald a numerate, resilient generation, bridging school-uni chasm for Africa's innovation future.