There is need and opportunity for assessments that support quick and playful – yet also accurate, rigorous and developmentally sensitive – appraisals of early numeracy. Ideally, these should be accessible to those who have opportunity to support children’s learning development and ultimately shift children’s trajectories. The iPad-based Early Years Toolbox (EYT) Early Numeracy assessment was developed and evaluated to determine its validity and reliability, and appropriateness of use by researchers and preschool educators. Results from two studies with 246 children aged 3–5 years indicated the following: construct validity and internal consistency, concurrent validity with established measures, developmental sensitivity, test–retest reliability and highly comparable results whether used by a researcher or an educator. This yields a brief and playful assessment of early numeracy and a potential approach to develop broad-use early years assessments.

需要和有机会支持对早期计算能力进行快速和有趣的评估——但也要准确、严格和对发展敏感——评估。理想情况下，那些有机会支持儿童学习发展并最终改变儿童轨迹的人应该可以使用这些。基于 iPad 的Early Years Toolbox (EYT) 早期算术开发和评估评估以确定其有效性和可靠性，以及研究人员和学前教育工作者使用的适当性。对 246 名 3-5 岁儿童进行的两项研究的结果表明：结构效度和内部一致性、与既定措施的同时效度、发展敏感性、重测信度以及研究人员或教育工作者使用的高度可比的结果。这产生了对早期计算能力的简短而有趣的评估，以及开发广泛使用的早期评估的潜在方法。