I use invisible ink pens in my class to learn about espionage during the American Revolutionary War. In the past I used a pen that worked perfectly and gave it to my students as gifts. This year I bought this brand, which is hardly suitable for every student. The ink is generally hard and very faint when light is held close to it. In comparison, other pens don't struggle with these two issues.
π Unlocking Secrets with Spy Ninja Secret Message Gear: The Ultimate Spy Communication Tool
7 Review
π© Invisible Birthday Halloween Christmas: Unveil the Magic with VOVRU
7 Review
Rainbow Spectrum Secret Viewfinder
7 Review
π Wild Planet Gear Night Scope: Enhance Your Night Vision Abilities!
7 Review
Engage Your Child'S Mind With Kizh Wooden Geoboard - A Montessori Educational Toy For STEM Learning
9 Review
Waboba Extreme Ball (Assorted Colors)
40 Review
G-WACK 𧩠Sculpture Intelligence Anxiety Development
7 Review
CubicFun Puzzles Sailboat Kids, the Ultimate Revenge Solution
9 Review