Number Ninja Academy

A three-day targeted math intervention sequence for third-grade resource groups focused on mastering standard algorithm addition and subtraction with multi-step regrouping. Students practice with structured place-value organizers that provide ample handwriting room.

A foundational 2nd-grade math mini-lesson introducing the US standard addition algorithm without regrouping. Students learn to align numbers by place value in tens and ones columns, add the ones first, and rewrite horizontal equations vertically.

A 2-page complete teacher answer key and scoring guide corresponding directly to the 12-problem Stack and Add worksheet. Features fully worked place-value charts, digit alignment reminders, and grading notes.

A four-part 3rd grade mathematics sequence aligned to Indiana Academic Standards and Everyday Mathematics strategies. Students master extended facts, partial-sums addition, trade-first subtraction, and mixed regrouping operations with number stories and language scaffolds.

A foundational early elementary math lesson introducing one-digit number comparison using the hungry alligator metaphor, ten-frame visuals, comparison symbols, and word sentences. Students learn to count, compare values from 0 to 9, and fluently connect mathematical symbols with comparison vocabulary.

A streamlined 2-page student worksheet containing 12 horizontal addition equations without regrouping. Each problem features a dedicated Tens and Ones place-value chart for students to practice rewriting and solving vertically.

A collection of third-grade instructional units and practice resources spanning essential daily math fluency and foundational physical science topics.

A targeted 3rd-grade math warmup lesson featuring visual representations of multiplication through equal groups and tape diagrams. Includes a student practice worksheet and a complete teacher answer key aligned to CCSS 3.OA.A.1.

Interactive presentation slides introducing vertical addition without regrouping. Features clear place-value alignment models, step-by-step animated-style breakdowns, common error analysis, and guided practice problems.

A foundational early math unit where students explore multiple concrete and visual representations to compose the number ten. Through structured ten-frame investigations and hands-on counter sketches, learners solidify number bonds to ten and demonstrate understanding through a cumulative assessment.

A low-prep second-grade place value station where students build, compare, and decode two-digit and three-digit numbers. Designed for independent practice or small groups of 2-3 peers using intuitive visual mats, built-in spinners, and structured recording sheets.

A two-page teacher answer key and instructional guide providing fully worked solutions for the mini-lesson and practice sheet, including Word Box sentence keys, common misconception notes, and differentiation strategies.