The purpose of this action research project was to determine how participating in regular number talks would increase students' mental math computation abilities. It analyzed the effectiveness of implementing a six-week number talk intervention in a fourth-grade classroom. The study was conducted in a Dual-Language School where the majority of students are English Language learners. Throughout the six-weeks, thirteen persistently high-risk and some-risk participants were progress monitored using the FastBridge portal. This study explored the students' abilities to participate in collaborative discussions, gain fluency skills and have a better understanding of number sense. The goal of the intervention was to help increase the participants FAST CBMmath Cap scores. This study provides support by using a number talk intervention to increase students' mental math computation abilities.