Double or Half Slides
A visual presentation for a 7th-grade life science lesson on haploid and diploid cells, featuring a warm-up math challenge, an embedded video on meiosis, and clear visual definitions of chromosome counts.
Chromosome Count Cards
A printable set of 8 animal chromosome data cards plus one blank template for students to use in the "Gamete Math" activity. Each card displays the animal's name, icon, and diploid (2n) chromosome count.
Gamete Math Worksheet
A student worksheet for the "Gamete Math" activity. Students record chromosome data for various animals and calculate the fertilization equation. Includes reflection questions and a final "Big Idea" challenge.
Ploidy Math Calculator
A visual reference sheet designed to look like a scientific calculator. It provides students with the mathematical formulas to convert between diploid (2n) and haploid (n) chromosome counts, along with key definitions.
Gamete Math Answer Key
A teacher's answer key for the Gamete Math activity, including a complete data table for all animal cards and sample responses for the reflection questions.