There is debate in the literature regarding how single-digit arithmetic fluency is achieved over development. While the Fact-retrieval hypothesis suggests that with practice, children shift from ...

Welcome to the asynchronous module, Subtraction Strategies Progression. At your own pace, read through the materials, watch the short video clips, and make sense of the pictures. This module is ...

Forty-four children between 6;0 and 7;11 took part in a study of derived fact strategy use. They were assigned to addition and subtraction levels on the basis of calculation pretests. They were then ...

The aim of this study was to investigate the strategies used by third graders in solving the 81 elementary subtractions that are the inverses of the one-digit additions with addends from 1 to 9 ...

In this video for Day 5, I’ll briefly explain the content of “Addition and Subtraction Using the 5 Bead.” Please excuse a few moments where my voice is a bit unclear due to a sore throat.