Number Exploder

An introductory lesson on division as equal sharing. Students help two friendly woodland creatures share forest treasures equally between them.

An introductory lesson on multiplication using equal groups and pairs, themed around magical elves making toys, foraging in the forest, and packing items. Students transition from concrete counting to skip counting and basic multiplication concepts.

An introductory lesson to multiplication using equal groups and visual representations. Students learn to connect repeated addition to multiplication using starry-themed groups.

A lesson focused on solving one-step word problems involving addition and subtraction. Students practice recognizing active language cues, modeling their thinking, and writing equations.

A single-digit multiplication lesson centered around animal counts and habitat scenarios. Students solve word problems using visual representations like arrays, equal groups, and tape diagrams.

A targeted 2nd-grade intervention lesson focused on adding 2-digit numbers with regrouping. Students use place value block drawings, color-coded numbers, and T-charts to build conceptual understanding and solid arithmetic habits.

Students apply their measurement skills to the metric system, learning about centimeters and practicing precise measurement starting at the zero mark.

Students learn to measure to the nearest inch using custom visual rulers. The lesson emphasizes locating the true starting zero mark instead of starting at the physical edge of the ruler.

A comprehensive math lesson focused on 3-digit addition with regrouping, utilizing visual base-ten block models and place value charts to guide students from conceptual understanding to standard algorithm mastery.

A highly visual, hands-on lesson that introduces double-digit addition with regrouping using base-ten blocks. Students learn to draw ones blocks, group ten of them together to trade for a tens rod, and record the regrouping process in the standard algorithm.

A targeted subtraction without regrouping intervention lesson using base-ten block pictorial representations. Designed for RTI small groups to build conceptual understanding by physically crossing out represented tens and ones before moving to abstract vertical subtraction.

A comprehensive lesson containing high-yield, retro-themed multiplication flashcards for rapid mental recall. Features a fold-and-cut design that guarantees perfect double-sided alignment on any printer.

A review lesson that connects the standard subtraction algorithm with concrete base-ten blocks and expanded form subtraction, helping students understand the 'why' behind regrouping.

Week 4 of the ESY Wildlife Detective curriculum. Focuses on a comprehensive mixed spiral math review (NJSLS operations, place value, and measurement) through a culminating multi-day outdoor expedition challenge.

Week 3 of the ESY Wildlife Detective curriculum. Focuses on the foundations of multiplication (NJSLS 2.OA, 3.OA) through repeated addition, skip-counting animal clusters, and creating grid-based habitat arrays.

Week 2 of the ESY Wildlife Detective curriculum. Focuses on place value, estimation, and measurement (NJSLS 1.MD, 2.MD, 3.MD) by measuring nest diameters, estimating burrow lengths, and understanding animal sizes.

Week 1 of the ESY Wildlife Detective curriculum. Focuses on addition and subtraction mastery within 20 and 100 by tracking animal footprints, counting steps, and analyzing forest trail data. Scaffolded for grades 1-4.

A collection of three clean, distraction-free 3-digit addition worksheets and answer keys, each containing a mixed set of 5 regrouping and 5 non-regrouping vertical calculations formatted for print.

A collection of mixed 3-digit addition and subtraction worksheets and answer keys, featuring mixed operations with and without regrouping. Excellent for cumulative review and operational fluency.

A collection of 3-digit subtraction worksheets and answer keys, featuring mixed regrouping and non-regrouping problems. Formatted for clean, distraction-free printouts.