{"url":"/san-marino/socal-mental-math-san-marino","provider":{"id":"socal-mental-math","name":"SoCal Mental Math Education Center","kind":"organization","about":"An abacus and mental math school with campuses in Diamond Bar and San Marino (and Irvine), teaching small groups from beginner abacus to competition-level mental arithmetic. Classes are by appointment.","website":"http://socal-mentalmath.com","phone":"(909) 616-1489","email":"Info@socal-mentalmath.com","instagram":"socal_mental_math","founded":1990,"credentials":[],"languages":[],"image":null},"location":{"id":"san-marino","name":"San Marino campus","street":"2920 Huntington Dr","unit":"B110","city":"san-marino","zip":"91108","neighborhood":"San Marino","coords":[-118.09255,34.12632],"precision":"exact"},"serviceArea":[],"programs":[{"id":"abacus-beginner","type":"afterschool","name":"Abacus Beginner","summary":"Hands-on abacus training in small groups for ages 4 to 7 to build number sense, focus and patience.","description":"Every student starts with a placement assessment, and a free trial class is offered. Classes are available by appointment on a first come, first served basis.","categories":["math"],"ages":{"min":4,"max":7},"format":"in-person","registration":{"url":"http://socal-mentalmath.com/contact.html","status":"open"},"afterschool":{"care":false,"meetings":[{"location":"san-marino","days":["sat"],"start":"13:00","end":"16:00"}]},"traits":{"intensity":"balanced","structure":"structured","groupSize":["small-group"],"sessionMinutes":55,"skillLevels":["beginner"],"goals":["skills","confidence","wellbeing"],"methods":["hands-on"],"goodFor":["new-to-it"],"setting":"indoor","commitment":"ongoing","gender":"all","staff":["credentialed-teachers"],"trialClass":true,"assessment":true,"feel":"Young children learn on a physical abacus in small, interactive groups, building number sense, focus and observation; every student starts with a placement assessment.","offers":["stem"],"topics":["abacus","mental-math","number-sense"]}},{"id":"mental-arithmetic","type":"afterschool","name":"Mental Arithmetic","summary":"Students move from the physical abacus to picturing it in their heads for fast multi-digit calculation, ages 7 to 11.","description":"Every student starts with a placement assessment, and a free trial class is offered.","categories":["math"],"ages":{"min":7,"max":11},"format":"in-person","registration":{"url":"http://socal-mentalmath.com/contact.html","status":"open"},"afterschool":{"care":false,"meetings":[{"location":"san-marino","days":["sat"],"start":"13:00","end":"16:00"}]},"traits":{"intensity":"balanced","structure":"structured","groupSize":["small-group"],"sessionMinutes":55,"skillLevels":["intermediate"],"goals":["skills","confidence"],"setting":"indoor","commitment":"ongoing","gender":"all","staff":["credentialed-teachers"],"trialClass":true,"assessment":true,"feel":"Students move from the physical abacus to picturing it in their heads, building concentration and fast multi-digit calculation in small groups.","offers":["stem"],"topics":["abacus","mental-math","multi-digit-calculation","concentration"]}},{"id":"advanced-competition","type":"afterschool","name":"Advanced and Competition Class","summary":"Small-group training for ages 10 to 14 for regional, national and international abacus and mental math competitions.","categories":["math"],"ages":{"min":10,"max":14},"format":"in-person","registration":{"url":"http://socal-mentalmath.com/contact.html","status":"open"},"afterschool":{"care":false,"meetings":[{"location":"san-marino","days":["sat"],"start":"13:00","end":"16:00"}]},"traits":{"intensity":"intensive","structure":"structured","competition":"focused","groupSize":["small-group"],"sessionMinutes":55,"skillLevels":["advanced"],"goals":["skills","performance","get-ahead"],"setting":"indoor","commitment":"ongoing","gender":"all","staff":["credentialed-teachers"],"trialClass":true,"assessment":true,"feel":"Small-group training for students who compete in regional, national and international abacus and mental math contests, such as the World City Cup.","topics":["abacus-competition","mental-math-competition","mental-math","speed-calculation"]}}],"source":{"url":"http://socal-mentalmath.com/classes.html","fetched":"2026-10-07"},"updated":"2026-10-09","checked":null,"closed":null,"sample":false}