This is the 2025 edition of Shinken Zemi Challenge for 3rd graders. Since we don't think we'll be able to complete the "Jitsuryoku Up Work," I'm offering it for sale in the hopes that someone else can use it. Thank you. Set Contents: ① Jitsuryoku Up Challenge April-September ② Jitsuryoku Up Challenge October-March ③ Challenge English April-September ④ Challenge English October-March ① and ② cover Japanese and Math, and are combined into one book each. The first and second photos show the front and back covers, respectively.