Determine the unknown whole number in an addition or subtraction equation.
Aligned tasks under 1.5F balance fluency and reasoning so students can explain decisions about Unknown number in equation.
TEKS 1.5F provides a clear foundation for continued study of Unknown number in equation in future grades.
Start with concrete or familiar examples, connect to prior knowledge, model a clear process, and provide checks for understanding aligned to 1.5F.
Standard 1.5F describes the essential skills and understandings for Unknown number in equation in Grade 1. It clarifies the learning outcomes and what successful work looks like.
It lays groundwork for the next grade by deepening accuracy and flexibility with Unknown number in equation, so students can tackle more complex problems later.
Use short exit tickets and tasks where students explain decisions, show multiple representations, or justify answers—directly aligned to 1.5F.
